Neon Chrome Overseer Edition Achievement Guide & Road Map

Neon Chrome Overseer Edition
Neon Chrome Overseer Edition Achievement Guide

Overview:
- Estimated achievement difficulty: 3/10 [Achievement Difficulty Rating]
- Offline: 14 [1000]
- Online: 0
- Approximate amount of time to 1000

: 15-20 hours [Estimated Time to 100%]
- Minimum number of playthroughs needed: 1 full + many floor replays
- Missable achievements: None [rogue gameplay]
- Does difficulty affect achievements: No traditional difficulty option. After beating the game for the first time, the difficulty increases from Overseer 1.0 to Overseer 2.0 automatically, making everything harder. You can, however, lower it back to Overseer 1.0 right away. No achievements require Overseer 2.0 or higher
- Unobtainable/glitched achievements: None

Introduction:
Welcome to Neon Chrome, a twin stick shooter roguelite where the goal is to ascend each level, one at a time, fighting bosses along the way, to reach the Overseer on the top of the tower and take him down. Along the way you'll find weapons, abilities, and enhancements (perks) to make you stronger. You'll also earn money along the way, and this money is used between runs to upgrade stats such as health, damage, energy, and luck, as well as buy more enhancement slots. It has a true roguelite feel, but gameplay is definitive twin stick shooter. Achievements are relatively simple but will require quite a bit of replaying levels to unlock everything. Let's get started.

PLEASE READ - Avoiding RNG:
There are a lot of miscellaneous achievements, and some will come naturally as you progress through everything else, but the most important thing to discuss is secret levels, unlockables, and how they work, because if you wait and don't take advantage of how the system works, you'll be stuck at the mercy of RNG and the completion could take you way longer as a result. Therefore, even though it's very easy to jump into roguelite games and just start playing, I recommend reading through this section to understand what you're looking for with the special levels and the hidden unlockables. Otherwise, you'll spend hours extra grinding and mopping up when you didn't need to.

Okay, so here is how special levels work. After your first run, where you'll do the tutorial and then play until you inevitably die, each time you do a run, when you look at the level staircase screen, you'll see some levels have a second path coming out of them with a little rectangle on them. That means that level has a special level exit, which is a purple elevator in addition to the usual green elevator. The purple elevators aren't hidden and don't require any requirements to enter (such as destroying targets, like some green elevators require). On the right side of the level staircase screen, it will show you the five floors of the game, and you'll be able to see which levels fall on which floors. The reason this matters is because each floor has its own group of special levels that can randomly show up. They are as follows:

Floor 1: Research Labs (12 special levels)
Floor 2: Office (10 special levels)
Floor 3: Warehouse (10 special levels)
Floor 4: Residential (11 special levels)
Floor 5: Medical (10 special levels)

How the system works is that, say you enter a purple elevator on a level of Floor 1, you will get a random one of the 12 available Research Lab levels. After completing it successfully, it will not appear again until you complete the other 11 unplayed ones. Once you complete all 12 special levels of Floor 1, from that point on, each time you enter a purple elevator on a Floor 1 level, you'll be taken to one of the 12 every time. This is important to know for Unlocker (100G) and the eight hidden unlockables.

Almost every unlockable item in the game is received from blue square towers you can interact with, but with eight exceptions that are hidden in gold towers in eight very specific special levels. Therefore, while you're playing and taking purple elevators, you want to be on the lookout for the following eight special levels, because if you are given that special level, grab the hidden unlockable while there. If you don't and you miss it, you'll be forced to finish all special levels on that floor and then grind purple elevators on that floor until RNG gives you the special level you're looking for. This can add a bunch of extra time to the completion, so stay alert for these special levels on each floor. When you reach a special level, it'll say the name of the level at the top of the screen. Pay attention, because it doesn't show on the pause screen which special level you're on.

Here are the names of the special levels and what floor they're on. When you get to one, refer to Unlocker (100G) for more information on how to access the hidden unlockable.

Floor 1 - Fireworks (Laser Pistol) *ROCKET LAUNCHER or ROCKET ability REQUIRED!*
Floor 2 - Locked Out (Gauss Gun)
Floor 2 - Triple Towers (Piercing Pulse)
Floor 3 - Exordium Imports Inc (Antioch Grenades) *GRENADE ability REQUIRED!*
Floor 3 - Hovertank Boss Fight (Blowtorch)
Floor 4 - Welcome Back? (Heavy Rifle)
Floor 4 - Communter District (Duramax Wall Smasher) *ROCKET LAUNCHER or ROCKET ability REQUIRED!*
Floor 5 - Emergency Accomodation (C4)

Save and Exit Exploit:
Like some rogue-ish games I've seen, this game saves at the start of each level, and if you pause, you can choose to Save and Exit, allowing you to resume your run later. This opens up the possibility of exploiting this mechanic. When you Save and Exit a level and then resume it, you'll be back at the start of the level as if you haven't played it at all. Here are a few ways you can use this setup to your advantage:

If you get trapped or cornered or are just taking crazy amounts of damage and think you're going to die, quickly pause and Save and Exit. This will allow you to try the level over again rather than dying and losing your entire run
If you are trying for a miscellaneous achievement, such as no killing, not being seen, or being fast, you can use this mechanic to retry levels as many times as you want
If you get bad RNG on an enhancement station or weapon drops, you can use this mechanic to play the level over. Enhancement stations will give you different three enhancements to choose from each time you reload
If you don't get the purple special level you want, you can use this mechanic to redo the regular level, enter the purple elevator, and get a different special level potentially

Step 1 - Beating the Game:
With that section out of the way, go ahead and jump in to start playing and get used to the gameplay. It should go without saying after the above section, but take every purple elevator available. It will save grinding later. You will be given three random classes of characters to choose from at the start of each run, each with their own traits and advantages. Like any roguelite, your main goal is to get strong and good enough to beat the game. Unlike many other roguelites I've played, this one actually didn't take many runs for that to happen. I beat it on my fourth run, and I've listed below some very important tips that will make this game far easier and cut down on the grinding immensely.

The Techie class is so incredibly OP that you should always pick that class when available. For every other class, they just have health, and the only way to refill health is at a rare Autodoc station or even rarer health drops. For those classes, ever hit you take matters, because the ways to refill your health are pretty limited. For the Techie on the other hand, he has a shield that automatically recharges. This increases your survivability exponentially, because now taking hits doesn't matter much as long as you can kil the enemy and/or get to safety for your shield to recharge, which is pretty easy to do in general
With the money you collect during runs, invest the bulk of it in Energy between runs. This may seem odd to not invest heavily in health or damage, but Techie's shield is stronger the higher your Energy is. Coincidentally, Energy is the cheapest stat to level up. After a few runs, I had Energy above 40, and by the time you reach 70 or even 100, the game becomes a joke. I was weathering rockets to the face and just running through mobs without shooting, with no worry of even losing my shield, let alone dying. Having Energy highly leveled and playing as Techie, you'll come to see how easy this game can feel
I still recommend investing around 10 levels in damage at the beginning, so help get through boss fights especially. I also recommend buying two or three more enhancement slots, but not until you actually unlock a bunch more enhancement options. I also eventually bought around 10 levels in health just as a backup. By the time I beat the game on my fourth run, I had health and damage at 10 each, and energy at 45 or so.
If Techie isn't available, Assassin and Corporate Soldier are your next best options. Assassin is invisible in the dark and has high crit, making it easier to get through without being swarmed. The Corporate Soldier has reduced damage from the front (which is where you'll usually be getting shot from), and higher damage, making him pretty good too.
As for weapons, the Heavy Rifle is king by a mile. There's a high likelihood you unlock it during the tutorial actually, and any time you find it, keep it even if the DPS is somewhat lower than a new gun you find. The massive benefit with the Heavy Rifle, aside from each bullet being really strong, is that it is the only gun in the game with Piercing by default. It pierces infinitely through enemies and walls. This makes it far easier to mow through mobs of enemies. It's also amazing for the shield-bearing enemies because it fires right through their shields and one-shots them. Lastly, it's really good against bosses too, and absolutely incredible against the second boss, the centipede.
If you don't have the Heavy Rifle, stick to weapons that are practical for your class regardless of DPS. For example, if playing as the Assassin, a shotgun isn't a good idea. Likewise, for any class with no shield and just health, since taking any damage matters, it's far better to use a long range gun and keep your distance. I stuck with any kind of rifle throughout almost all of my playthroughs. It was only when using the Techie that I would just run around with a shotgun since I didn't care about getting hit
As for Enhancements, some are amazing and some are terrible. Highest priority ones should be ones that improve reload speed and/or clip size. There is also a great one that gives 30% more damage against bosses. If you aren't using Techie, there is a great one that gives you 35% of your health refilled after each level, which is amazing for survivability. Some really bad ones are the ones that convert 15% of energy into health. It may sound good but it's pretty terrible at offsetting any damage you take, and isn't worth a slot. Also, early on, in your first few runs, grab ones that give credits too, just to help level up more between runs. Obviously they won't help you on the current run though, so feel free to ditch them later
Lastly, stuff that you unlock can actually all be purchased between runs to start the next run with. Head up all the way and you'll be able to scroll through all the weapons, abilities, and enhancements you've unlocked. Buying a weapon isn't really needed since you get plenty and they're all pretty effective. What I do recommend is buying a really good enhancement or two, since they're so cheap. My go-to was always the one that increases clip size by 50% and reload speed by 100%

With these tips, the game will start off feeling challenging (like any roguelite will), but will very quickly become easier and doesn't actually require much grinding at all for that breaking point to happen. By the time you have a few dozen points in Energy and play as Techie, you'll see how much easier it is to progress farther. Beat the game for the first time, grabbing as many purple elevators along the way as you can (and hidden unlockables too).

Step 2 - Grinding Special Levels and Unlockables (and Miscellaneous Achievements):
This is actually all that's left, but it will take a while. After beating the game, you can access the computer on the left of the main hub area and lower the difficulty back to Overseer 1.0 to keep it easy. Your goal now is to play every available special level on all floors, and to unlock all items. These can all be tracked on the huge screen to the right in the hub. It'll show you how many special levels you completed, but scroll down and you can see how many are left on each floor. You'll be able to see how many items you've unlocked too, but not which ones. To see that, you can go up to the weapon, ability, and enchancement crates and scroll through them. Red ones are ones you haven't unlocked, and it shows you which chapter they're in. Question marks are the eight hidden unlockables noted two sections above this.

So, your goal here is to play more runs to grind out all of the special levels on all the floors. Along the way, you will get all the normal unlockables (since you're guaranteed one on every special floor, plus the occasional ones that show up on regular floors). I found that Floor 2 and Floor 3 finished way before the others. If this happens, and you've both gotten all unlockables on a floor (you'll get a notification when you open a blue tower saying all unlockables have been gotten on that floor) and completed all special levels on a floor (tracked from the main screen in the hub), there's no longer a reason to play levels on that floor. If you're like me and you finish Floor 2 and/or Floor 3 before the others, you can just start a run, get any available special levels in Floor 1, then pause and choose Disconnect to kill yourself, then start a new run. If/when you finish the first floors, you can take the green elevators in the hub to skip right to the floor you still need special levels/unlockables on. If you're doing this, it should be late enough in your time with this game that you've already leveled up many stats. I'd also recommend grabbing a weapon and enhancement if you're jumping straight to Floor 4 or Floor 5 via elevator, just to give you that added leg up.

While grinding out special levels and unlockables, you can go for three specific miscellaneous achievements. They can all be challenging to go for when trying for them specifically, but if you keep an eye out for good opportunities while grinding, you will assuredly find some. They are:

Pacifist (60G)
Runner (60G)
Sneaky (100G)

The last one, Sneaky (100G), is most easily done on a gold level, which you'll encounter during grinding. Pay particular attention to that one, since it's definitely the hardest miscellaneous achievement to get, and requires a good amount of luck.

With the grinding done and those miscellaneous achievements done, if you're still missing Explosive (100G) or You've just been erased (60G), you can actually buy the weapons you need in the hub and get them very easily during the first boss fight. Refer to each description for how to quickly and easily get them, wrapping up this completion.

Conclusion:
While this game started off a little slow and stressful, I found it quickly became easy and very fun. It was way quicker than I expected to beat the game (Techie played a huge role there), and the grind is pretty decent for all special levels and unlockables, but thankfully the gameplay is fun and levels and relatively short. If you followed the tips for hidden unlockables, hopefully you didn't have to worry much about RNG in this game, and if you finished the grind, congrats on the completion!

[XBA would like to thank Necrophage33 for this Roadmap]

Pacifist

60
Finish a normal level without using abilities, weapons or melee.
As the description says, you need to complete any NORMAL level (not a special level on a purple elevator) without using , , or to do any sort of attack, even if you don't hit an enemy with them.

Don't even bother with this until you've done a few runs and beefed up your stats in the hub. This achievement is far easier with the Techie class, since you have the shield and therefore are far less likely to die. Since you'll also want to minimize interaction with enemies in general for this, to avoid getting shot, this achievement actually pairs nicely with Runner (60G). However, like a bunch of these miscellaneous achievements, if you play a level and notice that it's pretty conducive to this achievement (such as being short, minimal enemies on the main path, or you have leftover keycards from previous levels that allow you to get to the green exit quicker), you can use the Save and Exit exploit in the roadmap to restart the level, and now that you know where the exit is and how to get there quickly, you can beeline right to it, ignoring all enemies and just getting right in the elevator and mashing to escape.

Below is a clip of me doing this and Runner (60G) together. Take note that I had an leftover red keycard. This might sound situational, but I found it to happen pretty often while doing special levels (for example, you grab a red keycard on a level with a purple elevator and don't need to use the red keycard to to get to the purple elevator, so it stays with you). This makes this and Runner (60G) easier, and in some levels it'll be required for this achievement, just because some levels have red doors in your way and the only way to open them is to kill the Keymaster enemy who will drop the red keycard. Having one in your possession bypasses the need to defeat the Keymaster. Here is the clip:

https://www.xbox.com/play/media/7LUdzABKFR
Runner

60
Finish a normal level in under 20 seconds.
Like with Pacifist (60G) above, this is pretty situational, definitely won't happen naturally, and unfortunately cannot be done on a special purple level. This also doesn't count on the penultimate level of a run where you just run up and into a green elevator in like five seconds with no enemies.

Just like with Pacifist (60G), your best bet is to scout out this achievement on levels as you progress and grind out special levels and unlockables. While working through special levels, you will almost assuredly end up with leftover red keycards and yellow keycards, and these will allow you to cut through future levels quicker. Refer to Pacifist (60G) above for a clip of me doing both of these achievements together. As noted above, I had a leftover red keycard that allowed me to beeline straight to the exit and avoid having to find it. While this may sound highly random and situational, you will assuredly come across this situation many times while grinding through special levels and unlockables.
Sneaky

100
Finish a normal level without being seen.
This is by far the hardest miscellaneous achievement, and the one that relies on the most luck/RNG. I will go through a few ways that this achievement is possible, going from most reliable and practical to hardest but most opportunities to try.

Option 1 - Gold Level Modifier
I'm honestly not sure what triggers gold levels to show up, but I believe it's after you beat the game for the first time. I thought they were only showing up on Overseer 2.0, but then I lowered the difficulty and still saw many. When you play a gold level, the level will contain a random modifier. These modifiers can range from a huge level with less enemies, to mines everywhere, to constant reinforcements. There are two that are extremely conducive to this achievement though: Eerie Silence, or Crime Against Humanity. I'm honestly not entirely sure what Eerie Silence was supposed to do, but it seemed like if I didn't make any noises (no shooting, melee, abilities, etc.) enemies just ignored me. I was very clearly in enemies' line of sight, but they didn't react to me at all, and I was able to run right to the elevator and use it without anyone engaging me. If you get this and screw it up, use the Save and Exit exploit in the roadmap to try again. The other option, Crime Against Humanity, is one I've read about but never saw personally (as opposed to get Eerie Silence at least twice). Crime Against Humanity apparently eliminates all enemies on the level and instead there is one very strong boss enemy. This means you need to get to the elevator by just avoiding that single enemy instead. This is obviously the most practical, but in all my time with this game I never once saw this modifier.

Option 2 - Utilize Enhancements to Eliminate Enemies
There are two "instant" enhancements: one that immediately eliminates all human enemies, and another that eliminates all robot enemies. If you start a level with an enhancement station right by you (I've had this happen multiple times), you can use the Save and Exit exploit in the roadmap to restart the level over and over until the enhancement station gives you either of these two enhancements. Which one you want is dependent on the enemies in the level. In general, human enemies are easier to avoid but their placement can also screw you over entirely. There's never two enhancement stations in a level, so you'll only be able to eliminate one type of enemy or the other. I personally tried this method a few times but I found it practically impossible to avoid spider bot detection since their movement is so random.

Option 3 - "Legit" with the Assassin
The Assassin class is undetectable in darkness, which is shown via an onscreen indicator. This makes it way easier to pass by people unnoticed, but you'll assuredly still need to kill enemies to get past certain parts of a level. To do this, you need a high damage gun, because the only way to kill enemies with guns undetected is to kill them undetected (indicated by a "sneak attack" popup on screen when you shoot them) AND you need to kill them in the first bullet, because if you don't, even if you kill them an instant later with another bullet before they turn around, as soon as the exclamation mark shows above their head from being shot, it counts as being seen and voids this achievement. I tried to do this a few times with the Assassin but it's just really frustrating because one wrong move ruins it for the entire level. You can still use the Save and Exit exploit from the roadmap to try again on the same floor with the same layout, but you could end up spending a ton of time attempting this over and over.

Option 4 - "Legit" with Melee
I'm just guessing that this is one of the options the game expects you to utilize. There are a couple enhancements that drastically increase melee damage, and so you could approach all enemies from behind and melee them to kill them in a single hit without being seen. I personally never tried this, but I imagine it would be absurdly RNG, because sometimes enemies are just facing exactly where you're coming from and you have literally no way to avoid them. I don't recommend actually trying this method unless it somehow falls in your lap.

Option 5 - Hacker Drone
The Hacker class has a drone that flies around and attacks enemies. Enemies engaging with it and fighting it don't count as you being detected, so you could theoretically let your drone do all the fighting for you while you stay back and out of sight. I personally never tried this method, but I did use the Hacker class a couple times. The drone did fine with me, but if I wasn't shooting it seemed like enemies could take out the drone relatively easily. Maybe this would be possible on the first or second level of a run, but I can't imagine it being possible any later than that. I'm also not sure if any stat upgrades in the hub affect the Hacker's drone to make it stronger.

Another thing that can make this easier is if you have a leftover keycard from a previous floor that you can use to skip right to an exit and bypass the need to hunt one down on the current level. This may sound very situational, but you'll likely find it happens often while grinding special levels and unlockables - that you'll have extra keycards left over. Use leftover keycards along with the Save and Exit exploit from the roadmap and any of the options above to make this achievement easier to get.

Personally, the gold level modifiers are the most reliable to succeed but are the rarest and hardest to come by. You should assuredly come by a bunch though while grinding special levels and unlockables, so as long as you get either of the two mentioned in Option 1 above, take advantage of it and go for this achievement.
Grit

60
Play 20 levels without dying.
This achievement requires you to beat 20 levels in a row without dying, not cumulatively.

This is essentially story related, and you will unlock this unavoidably on the run where you beat the game. There are well over 20 levels per run, and you should always be starting from the first level when trying to beat the game for the first time.
Spiderbot

50
Defeat the spiderbot.
Story-related; cannot be missed.

This is the first boss of the game, and is a bigger, souped up spiderbot enemy. It has three phases, and changes phases when its health reaches the limits on its health bar.
- During the first phase, it fires a machine gun at you. Strafe around it at a distance or hide behind cover. Once it runs out of ammo and has to reload, unload on it
- During the second phase, it periodically sends out explosions in a telegraphed radius around it, so keep your distance and repeat the same strategy
- During the third phase, it also shoots out blue projectiles too, but they're easily avoided if you're far enough away since they just shoot out in straight lines with gaps in between
While fighting the boss, there are spiderbots spawning from destructible spawn points. All these spawn points are on the left side of the arena, so just stay on the right side to avoid them entirely.
Centipede

50
Defeat the centipede.
Story-related; cannot be missed.

This is the second boss of the game, and is a long centipede enemy. It has three phases, and changes phases when its health reaches the limits on its health bar. During all three phases, you damage it by shooting its body parts to remove the shield on them, then shooting the exposed ones until they're destroyed. Each destroyed one takes off a chunk of its overall health.
- During the first phase, it moves around slowly and periodically shoots out the enemies that charge at you and try to explode on you. They die in one shot, or can easily just be dodged when they come flying at you
- The second phase starts with it charging fast around the screen and setting mines everywhere. Don't be caught running behind it when this happens or you'll run into a cluster of mines and likely die instantly. Once it slows down, you now need to repeat attacking it but avoiding the mines too. Now, instead of spawning small enemies you can one-shot, it spawns bigger ones that take as many shots as a normal enemy, and they hang out and attack you. It'll spawn them one at a time, but then when you destroy a body piece it'll spawn a bunch at once. You'll want to be really aggressive to the boss in this phase because otherwise you'll just spend forever dealing with the endlessly spawning enemies
- The third phase against starts with a crazy charge around the arena and planting mines all over the place. Now the boss is really fast and it also shoots rockets at you. Keep your distance so you can avoid them. Thankfully it's only one at a time. Keep firing at its back parts to finally finish it off
As a side note, the shotgun is really good against this boss, but the Heavy Rifle is incredible. Since the Heavy Rifle has piercing, you can line up the boss from behind and shoot through all of its body parts in a single shot, making this boss an absolute joke to destroy. There are three weapon crates in this boss arena, so check them out if your weapon isn't great.
Hovertank

50
Defeat the hovertank.
Story-related; cannot be missed.

This is the third boss of the game, and is by far the easiest in my opinion. It hovers off the side of the arena, giving you plenty of safe area to move around in without the boss getting in your way. This arena has a turret in each of the four corners, and the map forces you to move around it clockwise from the northern position. Head to the northeast corner and turn on that turret (switch just south of it) and hang out near the turret until it's destroyed. The turret will aggro most attacks for you. When it gets destroyed, move to the southeast corner and activate that turret and repeat. Do this for each turret. Even on my very first run, I didn't need to use more than two of the four turrets, so there are plenty to spare. Let the turrets aggro the boss while you just shoot at the boss nonstop.

It also has three phases but they're essentially all the same. The first phase is just a periodic machine gun, the second includes a periodic railgun shot which is telegraphed and pretty easy to strafe out of line of sight. The third phase adds in an occasional rocket too, which again is easy to strafe away from. Your only real threat in this fight is the rockets in the third phase. Taking one to the face will mean instant death in early runs, but as long as you keep strafing back and forth, it shouldn't be a problem, and this boss should go down easily.
Hard Work

50
Kill 1000 enemies.
This is cumulative across all runs, win or lose, and will unlock relatively early. For me, it unlocked during my second or third run (out of the dozens you'll be doing to grind). This will therefore come naturally without trying.
Explosive

100
Kill 8 enemies with a single explosion.
While there are various situations where you may end up doing this, there is a very easy and RNG-avoiding way to do this. From the hub between runs, buy the Rockets ability for your next run. Abilities only cost 300 or 500, so they're really easy to afford. Now play through from the first level up to the first boss. Defeat the first boss like normal, which should be no problem by the time you're purposely going for this achievement, but be sure to keep at least two spiderbot spawns on the left side intact (preferably all three). Once the boss is dead, round up at least 8 spiderbots chasing you. Group them up then turn and fire your rocket ability into them. This should easily destroy them all in a single rocket and unlock this achievement.

Note that you can also do this with the rocket launcher weapon, and some of the grenade abilities. I recommend against the rocket launcher weapon just because you're stuck with it until the boss and you need to make sure you don't accidentally damage yourself. The grenade abilities also work but they're a little harder to "aim."
You've just been erased

60
Kill 3 enemies with a single railgun bullet.
The first step to this is actually unlocking the railgun. It's one of the random unlockables you'll get from Floor 2 gear boxes (the blue towers that give you new gear), so nothing really you can do to speed up unlocking this.

Once you have the railgun, a guaranteed way to get this is to use the exact same strategy as Explosive (100G) above, except buy the railgun for your run instead of an explosive (or do both achievements at the same time with the endless spawning spiderbots). When you buy a weapon in the hub, you can spend more money to buy a higher level of the gun. I think I bought one at level 8 or so, but that may have even been overkill. Each railgun shot does high damage by itself, and the spiderbots are really weak. Spawn a bunch, train them up to get three in a line, then fire into them. The endless spawning spiderbots make it easy to keep trying this until you get it.
Overseer

60
Stop the Overseer 1.0.
Story-related; cannot be missed.

This is for beating the final boss of the game, the Overseer, at the top of the tower. This end of the game is split up into a few individual parts.
1. The penultimate level is just a short run up to a green elevator. I'm not sure why this level exists
2. After that, you'll head right to a locked door and see the Overseer robot on the right. Wait for the dialogue to end and then the door with open. There will be a bunch of regular enemies, but you can just ignore them and run to the open doorway on the right. This starts the actual boss fight, which is broken up into three nearly-identical phases
3. The first phase, the boss will first go around the room to each container and awaken an enemy. You can prevent this by destroying each unit before the boss spawns an enemy there. This is pretty easy to do by quickly running to each one and shooting it to blow it up. To reach the right side, head up and shoot a hole in the wall to create a path to the right. After the boss walks its path, regardless of how many enemies it awakens, its shield will drop off, which is your cue to start shooting it. Much like the first boss of the game, it'll periodically unlock machine gun fire on you. Strafe around it and keep shooting. After the first third of its health is gone, its shield will come back up and it'll walk to the next room. Feel free to go ahead of it rather than wait for it
4. Second phase is identical to the second (blow up the containers to prevent or limit enemy spawns), except it'll fire more heavily when its shield goes off. Otherwise, exact same strategy
5. Third phase, it'll go left in the Throne Room to four pods, and there it'll awaken four heavy enemies at the same time as its shield comes off. This is a great opportunity to use up all of your energy by spamming whatever ability you have over and over to cut down the regular enemies. On top of the boss's machine gun fire, it'll also fire missiles and launch grenades in pretty high amounts. Move like crazy, never stopping, and stay clear of the red circles on the ground from grenades. If you're caught off guard, you can die very fast from all the explosives. Keep firing to finish the boss off
6. Once dead, head up the path in the center to a locked door, and wait there for the dialogue to finish. Now head up all the way to the throne and shoot the Overseer as soon as you reach the chair (he dies instantly). Approach the throne and interact with it to sit in it, beating the game
You're special

100
Complete all special levels.
There are a total of 53 special levels in the game. They are all accessed by taking the purple exit elevator in levels that have them, rather than the standard green elevator. You'll know which levels have purple elevator exits to special levels by the indication on the level staircase screen, where you can see a branching path from that level leading through a little rectangular icon. In general, you should always take the purple elevator every single time one is available, because this achievement will be one of your last achievements.

There is a longer description of the special level selection process in the roadmap, but to sum it up, the special levels are broken up into groups with a set amount of a certain type on each floor. For example, Floor 1 levels have 12 different Research Lab special levels that can spawn. Every time you take a purple elevator on a Floor 1 level, you will be taken to a random one of the incomplete Research Lab levels. This means that the first time you take a Floor 1 purple elevator, you'll get a random one of the 12 available. If you complete it, the next time you take a Floor 1 purple elevator you'll get one of the 11 remaining ones. The game will not repeat special levels until you've completed them all for a given floor. This is great for this achievement because it means you aren't at the mercy of RNG, hoping an unplayed one pops up for you. This basically just means it's a matter of replaying each floor's levels enough to use the purple elevators and get to all the special levels.

The number of special levels you've completed on each floor can be viewed and tracked on the giant screen to the right of your chair in the hub. The reason this achievement will be late in the game is because you only get a set randomized amount of special levels per floor per run. Sometimes you may get three or four special level options on a floor, and sometimes you might only get one (and sometimes you might get none on the first floor). While you still need special levels on all floors, you might as well just run through all floors in one continuous run. Once you get to a point where you only need special levels on a given floor (Floors 1 and 5 are likely to be your last), you can use the elevators in the hub to go directly to the floor you still need special levels in. If there aren't any, pause and Disconnect to kill yourself and start a new run, trying again.

This achievement therefore isn't difficult, it just requires some time to grind out all of the special levels on all of the floors. No need to keep track of which special levels you've done for this achievement, since you won't get repeats. It's just a matter of playing them all to unlock this achievement.
Stat Master

100
Upgrade a stat to level 100.
As the description says, you need to upgrade any of the four stats (health, damage, luck, or energy) to 100. This will require a lot of money collected during runs.

The cheapest stat to level up in energy of the four, and this coincidentally pairs perfectly with my tips in the roadmap about using the Techie class. By the time you level up energy to 100, Techie's shield will be so overpowered that this game will become a joke. Dump as much into energy as you can, and you'll be able to level it to 100 well before finishing everything else. By the time I completed the game, I had energy at 100, damage at 45, health at 15, and luck at 15, plus seven slots. So, there should be plenty of money along the way to the completion such that you shouldn't need to grind for stat leveling at all.

The fastest way to get money, assuming you want/need it, is to get the enhancement that gives you money for every floor you clear. You get 500 credits for the first five levels, but then 100x the level number for all subsequent levels (so, 1000 credits for level 10, 2600 credits for level 26, etc.). If you do a full run with this enhancement (by buying it in the hub at the start of a run), assuming only 26 levels on a run (the least I've ever seen), that's 36,000 credits just from that one enhancement. There's also the instant enhancement you may find on the way that gives you 3000 credits instantly. This is another good one to grab every single time it's available. Aside from those two, kill everyone and loot everything, and you should be flush with money at all times.

One other thing to note is that in the top left corner of the hub, there's a monitor you can interact with to see your achievements you've unlocked. You can redeem each unlocked one for money, giving you thousands of extra credits there too. Don't pass that money up.
Unlocker

100
Unlock all unlockables.
There are a total of 75 unlockables in the game, and the amount you have can be tracked on the giant screen on the right of your chair in the hub. Here, unlockables are weapons, abilities, and enhancements. You can see specifically which ones you have and don't have by going to the top of the hub to the crates for each and scrolling through what's available. Red items are ones that you haven't gotten from the blue gear towers, and if you hover over them, it'll tell you which Floor's levels you can find them in. Like with special levels that don't repeat, the blue gear towers will never repeat and will always give you something new until you've gotten all gear from that Floor's levels. This gear is all straightforward and just requires you to replay levels and open more blue gear towers to get more gear on that floor. The special levels via purple elevators are best for this, because each one is guaranteed to have a blue gear tower to open. Regular levels just have a random chance to contain a gear tower.

Beyond those normal gear chests, there are eight hidden gold gear chests with eight hidden items. These are represented by the question marks in the gear chests in the hub. Each one is found in a specific special level accessed via purple elevator. Because they are found in specific special levels, take note of my important bit in the roadmap about avoiding RNG. To sum it up here, get the hidden golden chests in each special level when you reach it for the first time, because if you don't, you'll have to first complete all special levels on that floor, then access more over and over while you wait for RNG to give you the special level you need. This is very tedious and could add hours to your completion time. To avoid this, use the below guide to look out for the following special levels. This is repeated from the roadmap. Below the points are how to find the hidden collectible in each special level.
- Floor 1 - Fireworks (Laser Pistol) *ROCKET LAUNCHER or ROCKET ability REQUIRED!*
- Floor 2 - Locked Out (Gauss Gun)
- Floor 2 - Triple Towers (Piercing Pulse)
- Floor 3 - Exordium Imports Inc (Antioch Grenades) *GRENADE ability REQUIRED!*
- Floor 3 - Hovertank Boss Fight (Blowtorch)
- Floor 4 - Welcome Back? (Heavy Rifle)
- Floor 4 - Communter District (Duramax Wall Smasher) *ROCKET LAUNCHER or ROCKET ability REQUIRED!*
- Floor 5 - Emergency Accomodation (C4)
To address those bolded notes first, as you can see, there are three instances where you need specific gear to access the gold chest. Personally, once I unlocked Rockets ability, I would buy it for every run anyway, and I recommend doing the same, just to be safe. If you do get one of those three special levels that requires specific gear and you don't have the gear, DO NOT complete the special level. Save and Exit, and go through the purple elevator again to get a different special level. This will "save" the special level for later and will keep it in rotation, avoiding the need to wait for RNG at the end.

Here's a description of how to get the hidden chests in each of those special levels above.
- Floor 1 - Fireworks (Laser Pistol) *ROCKET LAUNCHER or ROCKET ability REQUIRED!*
  - This one is a pain. If you go to the green elevator but don't leave, you'll be able to see an orange destructible tower up top off the screen in a place you can't reach. What you need to do is head to the catwalk off to the left and shoot up into that area with a rocket (either a launcher or the ability) so that the blast destroys the tower. The pain is that you're shooting at something offscreen, so you have to just hope you've got the right angle to hit it. I found it best to aim a little "low" (i.e. down to the right more) so you can actually see your rocket exploding on the wall just off screen, and from there make tiny adjustments "up" little by little until you break the tower. That'll open up the purple door off to the right so you can access the gold chest
- Floor 2 - Locked Out (Gauss Gun)
  - Right at the start of this special level, there is a button that opens the purple door on the left with a timer. Don't go through it or use the button. Instead, go straight up and you'll see what looks like an uninteractable door on the wall up top. You can actually destroy this "door." Do so and go up to find this chest
- Floor 2 - Triple Towers (Piercing Pulse)
  - On the left side of this special level are tons of units where enemies spawn from. Go into that room (which is accessed via the blue key in the top room) and destroy all of those units. That'll open the purple door on the right side above where you entered, so you can reach the chest
- Floor 3 - Exordium Imports Inc (Antioch Grenades) *GRENADE ability REQUIRED!*
  - Right in the center of this level is a crate with a interact symbol inside it. Use grenades to destroy this crate to reach the button under it. For some reason, grenades definitely work (I used them) but there are reports that rockets don't. Once you destroy the crate and press the button, this opens a door on the far right bottom corner to the chest
- Floor 3 - Hovertank Boss Fight (Blowtorch)
  - This gold chest is easily visible but is only accessed by using the white key that the Spiderbot boss drops at the end of Floor 1. So, you'll need to play starting from the beginning of a run, defeat the Spiderbot boss, grab the white key it drops, then play through your run up to the Hovertank boss at the end of Floor 3, destroy it, then use your white key to open the obvious door by the elevator with this gold chest inside
- Floor 4 - Welcome Back? (Heavy Rifle)
  - In this special level is a little training course where you need to run through and shoot the dummies and get to the end before time runs out. It's extremely lenient and you'll easily do it first try. Doing so successfully opens the door to this gold chest. As a side note, I got this during the tutorial of the game, and hopefully you do too, because this is the best weapon in the game by far
- Floor 4 - Communter District (Duramax Wall Smasher) *ROCKET LAUNCHER or ROCKET ability REQUIRED!*
  - This is another case of shooting a rocket off screen, like the Fireworks gold chest above, and is equally annoying. If you go to the northeast corner of this special level, you'll be able to see the orange destructible tower off to the right. You barely have any room to squeeze a rocket in there. You need to go up to the upmost point on the balcony and shoot east-southeast so your rocket hits the corner of the wall opening to destroy everything. Again, this is offscreen, so you have to just make minor adjustments. I recommend firing 2-3 rockets with minor adjustments, then go check and see if the door is open, and if not, come back and try a few more. Once you hit it, you'll open the purple door to reach the gold chest
- Floor 5 - Emergency Accomodation (C4)
  - You'll first need to get the blue key, which is off to the right side past a bunch of enemies. Once you have it, head northwest to the green elevator and you'll see the blue door to use the key. Do so, and now you can press the button near the elevator. This opens a door back where the blue key was, giving you access to two orange destructible towers. Destroy them, and this opens a purple door by where you first started this level. Go through to find the final gold chest