Day One Update DLC
10 Bite The HandKill a 343 developer in matchmaking or someone who has this achievement.
10 BLASTacular!Halo 2A MP: Destroyed all the Halo 2 Anniversary Multiplayer BLAST soda cans.
10 Blown Out of the SkyHalo 2A MP: Blow up the Banshee or Hornet in flight while piloted, with the Rocket Launcher.
10 Bombing RunHalo 2A MP: In Assault, take, plant, and score from the bomb spawn without dying or dropping it.
10 Cold as IceHalo 2A MP: On Lockdown, kill an opponent with the hanging ice.
10 Counter-SnipedHalo 2A MP: With a Sniper Rifle or Beam Rifle kill an enemy that was zoomed in.
10 Decorated WarriorHalo 2A MP: Get awarded at least 10 different medals in one non-team multiplayer game.
10 Destination VacationHalo 2: View one of the seasonal signs on Zanzibar in classic multiplayer.
10 Double DownHalo 2A MP: In Anniversary multiplayer, receive 2 or more Double Kill medals.
10 Elder SignsHalo 3: View 2 different sigils on Valhalla.
10 Eminent DomainHalo 2A MP: In Territories, control any 3 Territories simultaneously for 30 seconds.
10 Flaming Ninja AnniversaryHalo 2A MP: Kill an opponent that has the Ninja Redux achievement in Anniversary matchmaking.
10 Grand Theft HaloHalo 2A MP: In one match, steal a total of 5 occupied vehicles from opponents.
10 Invaders RepelledHalo 2A MP: In King of the Hill, kill 5 opponents within your controlled hill.
10 Legend SlayerHalo 2A MP: Kill an opponent that has the Legendary Anniversary achievement.
10 MVP 10Halo 2A MP: Finished as the top player on the winning team in a matchmade game.
10 Ninja ReduxHalo 2A MP: Kill 5 people with melee from behind in Anniversary matchmaking.
10 Power PlayHalo 2A MP: On Warlord, get every center powerup that becomes available in a single game.
10 Put Up Your DukesHalo 2A MP: Get 25 melee kills in multiplayer.
10 Red vs. BlueHalo 2A MP: Win 10 matches on Bloodline in multiplayer.
10 Shields Up!Halo 2A MP: On Zenith, personally activate the center energy shield 3 times in one matchmade game.
10 Shook the Hornet's NestHalo 2A MP: Get 30 kills with the Hornet in multiplayer.
10 Skeet ShooterHalo 2A MP: Killed 15 opponents that were airborne from a Man Cannon.
10 Stayin' AliveHalo 2A MP: In Juggernaut, survive as the Juggernaut for 30 seconds.
10 The Goose is LooseHalo 2A MP: Get 25 kills with the Gungoose in multiplayer.
10 Top GungooseHalo 2A MP: Get a kill with the Gungoose while airborne.
10 Tour of DutyHalo 2A MP: Complete a game in every one of the 6 updated Anniversary MP maps.
10 Triple ThreatHalo 2A MP: In Ricochet, pass once, score once, and kill at least one enemy in the same match.
10 WardenHalo 2A MP: In Anniversary matchmaking, stop the killing spree of another
10 ZealotHalo 2A MP: Win 10 multiplayer games as an Elite.
30 DevastatingHalo 3: Complete all Halo 3 Legendary campaign missions in under 3 hours.
30 Goat RopedHalo CE: Halo CE: Complete all Halo: CE Legendary campaign missions in under 3 hours.
30 MonopolizedHalo 2: Complete all Halo 2 Legendary campaign missions in under 3 hours.
30 You're JokingHalo 4: Complete all Halo 4 Legendary campaign missions in under 3 hours.
5 Animal HabitatHalo 2: Spot the hippo on the walls of Headlong in classic multiplayer.
5 Bloody Thirsty!Halo 2A MP: Found and destroyed the BLAST soda can on Bloodline.
5 Cold FusionHalo 2A MP: Kill an opponent by detonating a Fusion Coil.
5 Game MasterCreated and saved 5 Custom Game types.
5 Gate Your Thirst!Halo 2A MP: Found and destroyed the BLAST soda can on Stonetown.
5 High Altitude Thirst!Halo 2A MP: Found and destroyed the BLAST soda can on Zenith.
5 Hippo HeroHalo 3: Who DARED to discard this brave animal?
5 Man on the MoonHalo 3: He's watching you.
5 Master ForgerCreated and saved 5 Custom Maps in Forge.
5 Rule Your Thirst!Halo 2A MP: Found and destroyed the BLAST soda can on Warlord.
5 Sid GraffitiHalo 2: Spot the Sid graffiti on the walls of Coagulation in classic multiplayer.
5 Thirst Locked Down!Halo 2A MP: Found and destroyed the BLAST soda can on Lockdown.
5 WetworkHalo 2A MP: On Shrine in CTF, activate the enemy base waterfall and, before it stops, grab the flag.
5 Why Am I Here?Halo 2: View this hidden message on the classic Beaver Creek map.
5 Why So SeriousHalo 2: View the smiling face in the classic multiplayer map Coagulation.
5 Worship Your Thirst!Halo 2A MP: Found and destroyed the BLAST soda can on Shrine.