Collect 3,000 campaign or playlist medals.

Collect 5,000 campaign or playlist medals.

Collect 4,000 campaign or playlist medals.

Collect 2,000 campaign or playlist medals.

Earn a total of 2,500 Headshot medals in multiplayer.

Collect 1,000 campaign or playlist medals.

Kill 100 Grunts.

Win 250 multiplayer games.

Complete 400 missions or multiplayer games.

Kill a 343 developer in matchmaking or someone who has this achievement.

Complete 200 missions or multiplayer games.

Complete any co-op level on Legendary difficulty.

Complete any co-op level on Heroic difficulty.

Complete 300 missions or multiplayer games.

Complete 150 missions or multiplayer games.

Earn a total of 500 Grenade Kill or Plasma Kill medals in matchmade games.

Kill 100 Watchers.

Collect 7,000 campaign or playlist medals.

Complete 350 missions or multiplayer games.

Win 50 multiplayer games.

Kill 1000 Brutes.

Kill 100 Flood.

Kill 1000 Elites.

Complete 10 missions or multiplayer games.

Earn a total of 250 Beat Down medals in multiplayer.

Kill 1000 Crawlers.

Earn a total of 100 Legendary medals in matchmade games.

Earn a total of 250 Double Kill medals in matchmade games.

Kill 250 Hunters.

Complete a campaign mission or a match of multiplayer.

Kill 5,000 enemies or players.

Win 100 multiplayer games.

Kill 1000 Flood.

Created and saved 5 Custom Game types.

Complete 50 missions or multiplayer games.

Kill 100 Brutes.

Kill 1000 Grunts.

Complete 250 missions or multiplayer games.

Complete all campaigns on Normal difficulty.

Complete all campaigns on Easy difficulty.

Kill 50 Hunters.

Complete one cross-game playlist.

Complete 100 missions or multiplayer games.

Complete all campaigns on Heroic difficulty.

Kill 100 Knights.

Win 200 multiplayer games.

Collect 500 campaign or playlist medals.

Kill 100 enemies or players.

Kill 1000 Knights.

Complete each individual game specific LASO playlist for every Halo game.

Get killed by the Guardians.

Complete 500 missions or multiplayer games.

Kill 100 Elites.

Earn a total of 250 KOTH Mode Specific medals in matchmade games.

Win 300 multiplayer games.

Find and claim all the campaign skulls in Halo:CE, Halo 2, and Halo 3.

Complete all campaigns on Legendary difficulty.

Kill 100 Jackals.

Earn a total of 100 Killing Spree medals in matchmade games.

Complete any co-op level on Normal difficulty.

Win 400 multiplayer games.

Play a multiplayer or co-op game at least 3 months after your first game.

Win 350 multiplayer games.

Win 10 multiplayer games.

Complete the Master Chief Saga playlist.

Kill 20,000 enemies or players.

Complete 450 missions or multiplayer games.

Collect 9,000 campaign or playlist medals.

Activate all terminals.

Created and saved 5 Custom Maps in Forge.

Collect 10,000 campaign or playlist medals.

Collect 8,000 campaign or playlist medals.

Earn a total of 250 CTF Mode Specific medals in matchmade games.

Win 450 multiplayer games.

Kill 1000 Watchers.

Inscrutable. Mysterious.

Win 500 multiplayer games.

Earn a total of 2,500 Assist medals in multiplayer.

Complete 1 mission with the LASO playlist skulls enabled.

Complete three cross-game playlists.

Collect 6,000 campaign or playlist medals.

Kill 1000 Jackals.

Earn a total of 250 Killjoy medals in matchmade games.

Kill 100 Crawlers.

Win 150 multiplayer games.

Halo CE: Complete 343 Guilty Spark.

Halo CE: Play Halo: CE on the 15th of any month.

Halo CE: Complete a Halo: CE playlist.

Halo CE: Launch a Warthog for at least 5 seconds and have it splatter an enemy.

Halo CE: Kill the first group of enemies on The Truth and Reconciliation without being detected.

Halo CE: Beat the par time on The Maw.

Halo CE: Activate Terminal 1 on The Pillar of Autumn.

Halo CE: Complete Assault on the Control Room.

Halo CE: Play a CTF custom game on Blood Gulch with 4 players on the same console. Tri-tip optional.

Halo CE: Storm The Silent Cartographer beach with no Marine casualties on Heroic or Legendary.

Halo CE: Activate Terminal 6 on 343 Guilty Spark.

Halo CE: Complete every level of the game having seen it in both classic and remastered mode.

Halo CE: Complete every level of the game on Heroic difficulty.

Halo CE: Complete every level of the game on Normal difficulty.

Halo CE: Beat the par score on The Silent Cartographer.

Halo CE: Complete a match on at least 4 unique game types.

Halo CE: Beat the par score on The Maw.

Halo CE: Activate all Halo: CE Terminals.

Halo CE: Beat par time on all Halo: CE levels.

Halo CE: Beat the par score on 343 Guilty Spark.

Halo CE: Complete The Truth and Reconciliation with at least four rounds left in your Sniper Rifle.

Halo CE: Beat the par time on The Pillar of Autumn.

Halo CE: Beat the par time on Two Betrayals.

Halo CE: Beat the par time on Assault on the Control Room.

Halo CE: Complete three Halo: CE playlists.

Halo CE: Destroy four Wraith tanks in Assault on the Control Room with the Scorpion tank.

Halo CE: Kill a Hunter with one pistol round.

Halo CE: Beat the par time on The Truth and Reconciliation.

Halo CE: Complete a level without jumping.

Halo CE: Beat the par score on The Truth and Reconciliation.

Halo CE: Beat the par time on Halo.

Halo CE: Ride in a Pelican for several seconds on the level 343 Guilty Spark.

Halo CE: Beat the par score on Halo.

Halo CE: Halo CE: Complete all Halo: CE Legendary campaign missions in under 3 hours.

Halo CE: Complete every level of the game on Easy difficulty.

Halo CE: Find the hidden Rex sign on The Maw.

Halo CE: Complete The Truth and Reconciliation.

Halo CE: Complete Two Betrayals.

Halo CE: Kill every Elite on the level Keyes on Heroic or Legendary difficulty.

Halo CE: Beat the par score on Assault on the Control Room.

Halo CE: Complete Halo.

Halo CE: Find and claim all Skulls in Halo: CE.

Halo CE: Beat the par score on Keyes.

Halo CE: Complete any level on Heroic difficulty or higher without taking health damage.

Halo CE: Beat the par time on The Silent Cartographer.

Halo CE: Activate Terminal 5 on Assault on the Control Room.

Halo CE: Complete Halo without entering a vehicle.

Halo CE: Complete The Pillar of Autumn on Legendary without picking up a health kit.

Halo CE: Activate Terminal 4 on The Silent Cartographer.

Halo CE: Beat the par score on Two Betrayals.

Halo CE: Complete Keyes.

Halo CE: Activate Terminal 10 on The Maw.

Halo CE: Complete The Library.

Halo CE: Complete The Maw.

Halo CE: Complete The Silent Cartographer.

Halo CE: Complete Two Betrayals on Legendary difficulty without picking up a new weapon.

Halo CE: Listen to the Thirsty Grunt talk about his eating habits.

Halo CE: Complete the Warthog ride of The Maw without being forcibly ejected from your vehicle.

Halo CE: Beat the par time on The Library.

Halo CE: Activate Terminal 3 on The Truth and Reconciliation.

Halo CE: Beat the par time on 343 Guilty Spark.

Halo CE: Complete the Halo: CE LASO Campaign playlist.

Halo CE: Complete The Library on Heroic or Legendary difficulty without dying.

Halo CE: Complete every level of the game on Legendary difficulty.

Halo CE: Complete Two Betrayals on Legendary difficulty without killing any Grunts.

Halo CE: Trigger a hidden music cue in Halo: CE.

Halo CE: Find and claim the Bandanna skull in remastered mode.

Halo CE: Find and claim the Black Eye skull in remastered mode.

Halo CE: Find and claim the Boom skull in remastered mode.

Halo CE: Find and claim the Eye Patch skull in remastered mode.

Halo CE: Find and claim the Famine skull in remastered mode.

Halo CE: Find and claim the Fog skull in remastered mode.

Halo CE: Find and claim the Foreign skull in remastered mode.

Halo CE: Find and claim the Grunt Birthday Party skull in remastered mode.

Halo CE: Find and claim the Iron skull in remastered mode.

Halo CE: Find and claim the Malfunction skull in remastered mode.

Halo CE: Find and claim the Mythic skull in remastered mode.

Halo CE: Find and claim the Pinata skull in remastered mode.

Halo CE: Find and claim the Recession skull in remastered mode.

Halo CE: Complete a match on at least 8 different classic multiplayer maps.

Halo CE: Complete The Pillar of Autumn.

Halo CE: Beat the par score on The Pillar of Autumn.

Halo CE: Activate Terminal 7 on The Library.

Halo CE: Beat the par score on The Library.

Halo CE: It's a sign.

Halo CE: Activate Terminal 8 on Two Betrayals.

Halo CE: Activate Terminal 9 on Keyes.

Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.

Halo CE: Disapprovingly look at Captain Keyes' abandoned pipe.

Halo CE: Destroy three of the four Banshees on Halo during a single play-through.

Halo CE: Activate Terminal 2 on Halo.

Halo CE: Beat the par time on Keyes.

Halo CE: Beat the par score on all Halo: CE levels.

Halo CE: Complete the level The Pillar of Autumn on Legendary without picking up an overshield.

Halo CE: Finish The Silent Cartographer without shooting, grenades, melee, dying or restarting.

Halo 2: In The Oracle, find the holo-drone before the Heretic Leader activates it.

Halo 2: Collect the Master Chief toy in Delta Halo.

Halo 2: Spot the hippo on the walls of Headlong in classic multiplayer.

Halo 2: Beat the par score on every Halo 2 level.

Halo 2: Beat the par time on The Great Journey.

Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month.

Halo 2: Complete the LASO campaign playlist.

Halo 2: Stick a Plasma Grenade to a Stealth Elite on Outskirts.

Halo 2: Complete every level of the game on Easy difficulty.

Halo 2: Beat the par score on Cairo Station.

Halo 2: Beat the par score on Delta Halo.

Halo 2: Complete Cairo Station.

Halo 2: Complete Metropolis without entering a vehicle on Heroic or Legendary.

Halo 2: Complete three Halo 2 playlists.

Halo 2: Listen to the Cowardly Grunt's woes.

Halo 2: Activate Terminal 1 on Cairo Station.

Halo 2: Activate Terminal 9 on Quarantine Zone.

Halo 2: Complete Delta Halo.

Halo 2: Complete any campaign level without dying on Normal or harder.

Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer.

Halo 2: Activate Terminal 8 on Sacred Icon.

Halo 2: Collect the Tartarus toy in Quarantine Zone.

Halo 2: Fly the Heretic Banshee.

Halo 2: Beat the par time on Cairo Station.

Halo 2: Collect the Cortana toy in Gravemind.

Halo 2: View both signs in the level Metropolis.

Halo 2: View this hidden message on the classic Beaver Creek map.

Halo 2: View the smiling face in the classic multiplayer map Coagulation.

Halo 2: Complete a match on at least 4 different game types in classic multiplayer.

Halo 2: Activate Terminal 7 on Regret.

Halo 2: Activate Terminal 6 on Delta Halo.

Halo 2: Activate Terminal 3 on Metropolis.

Halo 2: Beat the par time on The Arbiter.

Halo 2: Activate Terminal 5 on The Oracle.

Halo 2: Beat the par time on High Charity.

Halo 2: Beat the par score on Regret.

Halo 2: Beat the par time on Gravemind.

Halo 2: Beat the par score on The Great Journey.

Halo 2: Kill an enraged, berserk Brute using melee.

Halo 2: Beat par time on all Halo 2 levels.

Halo 2: Shoot the soccer ball in the level Metropolis.

Halo 2: Complete Gravemind.

Halo 2: Complete a match on at least 8 different classic multiplayer maps.

Halo 2: Collect all eight Halo toys.

Halo 2: Find and claim all Skulls in Halo 2.

Halo 2: Complete Uprising.

Halo 2: Beat the par score on Sacred Icon.

Halo 2: Complete Delta Halo without entering a vehicle on Heroic or Legendary.

Halo 2: Beat the par score on The Arbiter.

Halo 2: Complete every level of the game on Heroic difficulty.

Halo 2: Spot the developer in the opening cutscene of Gravemind on Legendary in Classic Mode.

Halo 2: Oh, hi!

Halo 2: Complete High Charity.

Halo 2: Beat the par time on Quarantine Zone.

Halo 2: Activate all Halo 2 Terminals.

Halo 2: Collect the Rampant Cortana toy in High Charity.

Halo 2: Beat the par time on Regret.

Halo 2: Activate Terminal 2 on Outskirts.

Halo 2: Activate Terminal 4 on The Arbiter.

Halo 2: Activate Terminal 10 on Gravemind.

Halo 2: Complete every level of the game on Normal difficulty.

Halo 2: Complete The Great Journey.

Halo 2: Beat the par score on Uprising.

Halo 2: She's not picking up.

Halo 2: Beat the par score on The Oracle.

Halo 2: Collect the Arbiter toy in Sacred Icon.

Halo 2: Complete every level of Halo 2 having seen it in both classic and remastered mode.

Halo 2: Complete every level of the game on Legendary difficulty.

Halo 2: Beat the par time on Metropolis.

Halo 2: Complete a level with only the Streaking Skull active on Heroic or Legendary.

Halo 2: Beat the par time on Sacred Icon.

Halo 2: Complete a level in co-op on Heroic or Legendary with the Masterblaster Skull active.

Halo 2: Complete The Arbiter.

Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.

Halo 2: Beat the par score on Quarantine Zone.

Halo 2: Find and claim the Famine Skull on Legendary.

Halo 2: Find and claim the Ghost Skull on Legendary.

Halo 2: Find and claim the Grunt Birthday Party Skull on Legendary.

Halo 2: Find and claim the Iron Skull on Legendary.

Halo 2: Find and claim the IWHBYD Skull on Legendary.

Halo 2: Find and claim the Mythic Skull on Legendary.

Halo 2: Find and claim the Sputnik Skull on Legendary.

Halo 2: Find and claim the That's Just...Wrong Skull on Legendary.

Halo 2: Find and claim the Thunderstorm Skull on Legendary.

Halo 2: Beat the par time on Delta Halo.

Halo 2: Spot the Sid graffiti on the walls of Coagulation in classic multiplayer.

Halo 2: Listen to a hidden music cue in Halo 2.

Halo 2: Kill 7 opponents from behind in a row without being spotted.

Halo 2: Drive a Scorpion while playing as the Arbiter.

Halo 2: Find and claim the Anger Skull on Legendary.

Halo 2: Find and claim the Assassins Skull on Legendary.

Halo 2: Find and claim the Black Eye Skull on Legendary.

Halo 2: Find and claim the Blind Skull.

Halo 2: Find and claim the Catch Skull on Legendary.

Halo 2: Find and claim the Envy Skull on Legendary.

Halo 2: Collect the Didact toy in The Great Journey.

Halo 2: Complete Quarantine Zone.

Halo 2: Beat the par time on The Oracle.

Halo 2: Complete Regret.

Halo 2: Collect the Prophet of Regret toy in Regret.

Halo 2: Complete Metropolis.

Halo 2: Collect the Librarian toy in Uprising.

Halo 2: Complete all Halo 2 Legendary campaign missions in under 3 hours.

Halo 2: Complete the level Regret with the Prophet Birthday Skull activated.

Halo 2: Activate Terminal 12 on High Charity.

Halo 2: Beat the par time on Uprising.

Halo 2: Grab the energy sword on the level Outskirts.

Halo 2: Beat the par score on Metropolis.

Halo 2: Beat the par time on Outskirts.

Halo 2: Beat the par score on Outskirts.

Halo 2: Complete Sacred Icon.

Halo 2: Activate Terminal 13 on The Great Journey.

Halo 2: Beat the par score on Gravemind.

Halo 2: Acquire the Scarab Gun.

Halo 2: Complete The Oracle.

Halo 2: Activate Terminal 11 on Uprising.

Halo 2: Beat the par score on High Charity.

Halo 2: Complete a Halo 2 playlist.

Halo 2: Complete Outskirts.

Halo 3: Complete the Halo 3 LASO Campaign playlist.

Halo 3: Complete three Halo 3 playlists.

Halo 3: Complete Halo on 4-player Legendary co-op, with Iron Skull, and everyone in Ghosts.

Halo 3: Beat the par score on The Storm.

Halo 3: Complete The Storm.

Halo 3: Find the hidden Skull on the Assembly multiplayer map.

Halo 3: Activate Terminal 6 on The Covenant.

Halo 3: Activate Terminal 3 on The Ark.

Halo 3: On Tsavo Highway, complete the level without entering a vehicle.

Halo 3: Beat the par score on every Halo 3 level.

Halo 3: Complete a Halo 3 playlist.

Halo 3: Find all the hidden multiplayer Skulls.

Halo 3: Fight alongside and listen to The Man. The Legend. Chips Dubbo.

Halo 3: Beat the par score on Tsavo Highway.

Halo 3: Listen to the story of the Final Grunt.

Halo 3: Beat the par time on Floodgate.

Halo 3: Complete all Halo 3 Legendary campaign missions in under 3 hours.

Halo 3: Find the hidden Skull on the Citadel multiplayer map.

Halo 3: Complete Floodgate.

Halo 3: Beat the par time on The Ark.

Halo 3: Trigger the hidden music cue in Halo 3.

Halo 3: View the communique from Mendicant Bias.

Halo 3: On The Ark, complete the level without entering a vehicle on Legendary.

Halo 3: View 2 different sigils on Valhalla.

Halo 3: Find and claim all Skulls in Halo 3.

Halo 3: Complete every level of the game on Heroic difficulty.

Halo 3: Complete a match on at least 8 different multiplayer maps.

Halo 3: Beat the par score on Floodgate.

Halo 3: Complete every level of the game on Legendary difficulty.

Halo 3: Listen to the tale of a young Grunt named Flipyap.

Halo 3: Beat the par time on Halo.

Halo 3: Beat the par score on Halo.

Halo 3: Complete every level of the game on Easy difficulty.

Halo 3: Activate Terminal 5 on The Covenant.

Halo 3: Beat the par score on Sierra 117.

Halo 3: Beat the par score on The Covenant.

Halo 3: Find a lonely missing link.

Halo 3: Destined for greatness.

Halo 3: Find the hidden Skull on the Heretic multiplayer map.

Halo 3: Beat the par time on Tsavo Highway.

Halo 3: Who DARED to discard this brave animal?

Halo 3: Complete Crow's Nest.

Halo 3: Activate Terminal 2 on The Ark.

Halo 3: Complete a match on at least 4 different game types in multiplayer.

Halo 3: Beat the par score on Crow's Nest.

Halo 3: Complete Sierra 117.

Halo 3: Complete Cortana.

Halo 3: Complete Tsavo Highway.

Halo 3: Complete The Covenant.

Halo 3: Play a game of Halo 3 on the 25th of any month.

Halo 3: Beat the par time on Crow's Nest.

Halo 3: Activate Terminal 4 on The Covenant.

Halo 3: Beat the par time on Sierra 117.

Halo 3: Activate Terminal 7 on Halo.

Halo 3: Beat the par time on The Storm.

Halo 3: Activate Cortana's Terminal on Cortana.

Halo 3: Find the hidden Skull on the Longshore multilayer map.

Halo 3: Beat the par time on Cortana.

Halo 3: He's watching you.

Halo 3: Find and claim the Black Eye Skull on Normal or harder.

Halo 3: Find and claim the Blind Skull on Normal or harder.

Halo 3: Find and claim the Catch Skull on Normal or harder.

Halo 3: Find and claim the Cowbell Skull on Normal or harder.

Halo 3: Find and claim the Famine Skull on Normal or harder.

Halo 3: Find and claim the Fog Skull on Normal or harder.

Halo 3: Find and claim the Grunt Birthday Party Skull on Normal or harder.

Halo 3: Find and claim the Iron Skull on Normal or harder.

Halo 3: Find and claim the IWHBYD Skull on Normal or harder.

Halo 3: Find and claim the Mythic Skull on Normal or harder.

Halo 3: Find and claim the Thunderstorm Skull on Normal or harder.

Halo 3: Find and claim the Tilt Skull on Normal or harder.

Halo 3: Find and claim the Tough Luck Skull on Normal or harder.

Halo 3: Destroy 3 total Phantoms on The Covenant.

Halo 3: Find your first missing links.

Halo 3: Complete every level of the game on Normal difficulty.

Halo 3: Beat the par score on The Ark.

Halo 3: Complete The Ark.

Halo 3: Complete Halo.

Halo 3: Find the poster of the missing man.

Halo 3: 4 vehicles, 1 gap on Legendary using Cowbell, Catch, Thunderstorm, Mythic, and Tough Luck.

Halo 3: Watching. Waiting. Plotting.

Halo 4: Complete the Halo 4 LASO Campaign playlist.

Halo 3: Activate Terminal 1 on The Ark.

Halo 3: Activate all Halo 3 Terminals.

Halo 3: Find the hidden Skull on the Sandbox multiplayer map.

Halo 3: Find the hidden Skull on the Orbital multiplayer map.

Halo 3: Beat the par score on Cortana.

Halo 3: Beat the par time on The Covenant.

Halo 3: This stuff is your history!

Halo 3: Beat the par time on all Halo 3 levels.

Halo 4: Play a game of Halo 4 on the 6th of any month.

Halo 4: Complete Infinity without one preventable Marine death on Heroic or Legendary.

Halo 4: Activate Terminal 3 on Infinity.

Halo 4: Complete a Halo 4 playlist.

Halo 4: Complete Composer.

Halo 4: Beat the par time on Midnight.

Halo 4: Activate Terminal 7 on Midnight.

Halo 4: Beat the par score on Requiem.

Halo 4: Complete Dawn.

Halo 4: Complete three Halo 4 playlists.

Halo 4: Kill 3 Crawlers in one hit with the Gravity Hammer on Midnight.

Halo 4: Access the Master Chief's records on Dawn.

Halo 4: Beat the par time on all Halo 4 levels.

Halo 4: Beat the par score on Shutdown.

Halo 4: Beat the par score on Midnight.

Halo 4: Trick or force a Hunter to fall to its demise on Shutdown on Heroic or Legendary.

Halo 4: Beat the par score on every Halo 4 level.

Halo 4: Activate Terminal 4 on Reclaimer.

Halo 4: Complete all Halo 4 Legendary campaign missions in under 3 hours.

Halo 4: What do Marines know about sticks?

Halo 4: Complete Forerunner.

Halo 4: Beat the par time on Reclaimer.

Halo 4: Take out both Hunters using only the Sticky Detonator on Composer.

Halo 4: Complete a match on at least 8 different multiplayer maps.

Halo 4: Beat the par score on Dawn.

Halo 4: Complete every level of the game on Normal difficulty.

Halo 4: Beat the par score on Composer.

Halo 4: Activate Terminal 1 on Requiem.

Halo 4: Complete every level of the game on Heroic difficulty.

Halo 4: Complete Infinity.

Halo 4: Beat the par time on Requiem.

Halo 4: Beat the par score on Infinity.

Halo 4: Activate Terminal 6 on Composer.

Halo 4: Activate Terminal 5 on Shutdown.

Halo 4: Complete every level of the game on Legendary difficulty.

Halo 4: Carry a UNSC weapon all the way through Forerunner on Heroic or Legendary.

Halo 4: Complete every level of the game on Easy difficulty.

Halo 4: Beat the par time on Composer.

Halo 4: Complete a match on at least 4 different game types in multiplayer.

Halo 4: Beat the par score on Reclaimer.

Halo 4: Activate all Halo 4 Terminals.

Halo 4: Complete every level of the game on Legendary difficulty, by yourself.

Halo 4: Activate Terminal 2 on Forerunner.

Halo 4: Beat the par time on Dawn.

Halo 4: Beat the par time on Forerunner.

Halo 4: Complete Reclaimer.

Halo 4: Complete Requiem.

Halo 4: Complete Midnight.

Halo 4: On Reclaimer, use a Wraith to kill at least four enemy Wraiths on Heroic or Legendary.

Halo 4: Beat the par time on Infinity.

Halo 4: Beat the par score on Forerunner.