- Estimated achievement difficulty: 5/10 [Achievement Difficulty Rating]
- Offline: 30 [1000

- Online: 0
- Approximate amount of time to 1000

- Minimum number of playthroughs needed: 3
- Missable achievements: None
- Does difficulty affect achievements: Yes - 'Revenge' and 'Hell' difficulties for Bitter Rivals (80G) and Infinite (100G)
- Unobtainable/glitched achievements: None
Introduction:
Bright Memory: Infinite is the full-fledged follow-up to Bright Memory, and the work of one man, FYQD-Studio. Playing as Supernatural Scientific Research Organization operative, Shelia, you'll investigate mysterious portals appearing in the sky, causing demonic soldiers to spill into our reality. Combat involves wielding various weapons, including a Light Blade katana, which you can use to send bullets ricocheting back at enemies. It's a fast-paced and fun first-person shooter that flies by at a slender two hours or so, and its unlockable higher difficulty levels provide some neat replay value.
Step 1 - First Playthrough:
Go through the game on 'Easy' or 'Normal' difficulty to unlock the 'Revenge' difficulty level. During this initial playthrough of the game, you'll unlock the Battle-hardened (30G), Matchless Warrior (35G), Power Balance (30G), Eagle-eye (50G), Peerless Warrior (30G), Battlefield Veteran (30G), Get Rich (30G), Get Richest (50G), Extreme Skills (40G), Auto-Tracking (8G), Flames in the Sky (7G), Fallen General (30G), Burning Bridges (30G) and Restoration (50G) (for clearing the game) achievements, without much effort.
Step 2 - Higher Difficulties:
Unlock 'Revenge' difficulty and complete the game again to access the final 'Hell' difficulty, and the Bitter Rivals (80G) achievement. Finish the game again to unlock the Infinite (100G) achievement, then you can set about using scene selection to mop up any remaining achievements you may still have to earn.
Step 3 - Mop up:
Using scene select option, you can retry the stealth-based 'Surrounded' mission if you failed it on previous attempts, alongside the short car chase segment, in which you have to destroy five vehicles. If you've yet to unlock them, you can work on the various achievements attached to attaining skills with the assault rifle, shotgun, handgun, and sniper rifle, as well as the ones connected to collecting Reliquaries. You should, by then, have unlocked the full complement of achievements. Well done!
Conclusion:
A slender and streamlined FPS made by just one person, Bright Memory: Infinite is quite the feat – an action game that flies by at a lick, bombarding you with slick set pieces and cracking gunplay. This is a first-person shooter distilled to its raw elemental components, and it's marvellous.