Destroy an enemy vehicle with equipment in a ranked playlist or in campaign.
Unlocked: 01 Mar 2008 23:18:58
Orpheus
10Score over 15,000 points in the Campaign meta-game on the eighth mission.
Unlocked: 01 Mar 2008 23:08:35
Splatter an enemy with the mongoose in a ranked free for all playlist (Online).
Unlocked: 29 Feb 2008 23:04:20
Board the same vehicle within 10 seconds after being boarded in any free for all playlist (Online).
Unlocked: 29 Feb 2008 22:37:13
Score a Double Kill with a single spartan laser shot in a ranked free for all playlist (Online).
Unlocked: 29 Feb 2008 22:18:43
Score 5 grenade sticks in any ranked free for all playlist (Online).
Unlocked: 29 Feb 2008 21:55:45
Overkill
5Kill 4 enemies within 4 seconds of one another in a ranked free for all playlist (Online).
Unlocked: 29 Feb 2008 21:48:15
Kill 3 enemies within 4 seconds of one another in a ranked free for all playlist (Online).
Unlocked: 24 Feb 2008 00:30:46
Score a Triple Kill with the sword in a ranked free for all playlist (Online).
Unlocked: 24 Feb 2008 00:30:46
Kill 10 enemies without dying in any ranked free for all playlist (Online).
Unlocked: 22 Feb 2008 22:55:24
Advance to the Spartan Officer ranks (Online).
Unlocked: 18 Feb 2008 23:40:11
Marathon Man
40Locate and access all Terminals in the Campaign.
Unlocked: 18 Feb 2008 22:49:28
Mythic
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: 18 Feb 2008 22:47:42
The Key
40Finish the eighth mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: 18 Feb 2008 22:46:43
Tilt
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: 18 Feb 2008 22:19:54
Last Stand
40Finish the seventh mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: 18 Feb 2008 22:05:18
Thunderstorm
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: 18 Feb 2008 20:56:47
Refuge
30Finish the sixth mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: 18 Feb 2008 20:34:04
Famine
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: 18 Feb 2008 19:47:48
Fog
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: 17 Feb 2008 22:13:12
Assault
30Finish the fourth mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: 17 Feb 2008 22:11:20
Catch
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: 17 Feb 2008 21:50:38
Kill 5 enemies by melee or assassination in a ranked free for all playlist (Online).
Unlocked: 16 Feb 2008 21:32:18
MVP
5Earn the MVP in any ranked playlist (Online).
Unlocked: 16 Feb 2008 18:24:55
UNSC Spartan
15Earn your Sergeant rating to be recognized as a true Spartan (Online).
Unlocked: 09 Feb 2008 22:48:02
Graduate
10Earn 5 EXP or finish 10 games to complete the requirements for basic training (Online).
Unlocked: 06 Feb 2008 19:27:50
Landfall
20Finish the first mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: Offline
Holdout
20Finish the second mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: Offline
The Road
20Finish the third mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: Offline
Cleansing
30Finish the fifth mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: Offline
Return
50Finish the final mission of the Campaign on Normal, Heroic, or Legendary.
Unlocked: Offline
Finish the Campaign on Normal.
Unlocked: Offline
Finish the Campaign on Heroic (unlocks achievement for Normal, if not earned).
Unlocked: Offline
Finish the Campaign on Legendary (unlocks achievements for Normal and Heroic, if not earned).
Unlocked: Offline
Iron
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: Offline
Black Eye
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: Offline
Tough Luck
10Find and claim this skull when playing on Normal, Heroic or Legendary difficulty.
Unlocked: Offline
Destroy an enemy banshee with the spartan laser or missile pod in a ranked playlist or in campaign.
Unlocked: Offline
Kill 5 enemies with the needler in a ranked free for all playlist or in campaign.
Unlocked: Offline
Kill 10 enemies with headshots in a ranked free for all playlist or in campaign.
Unlocked: Offline
Destroy a vehicle that has three enemies in it in a ranked playlist or in campaign.
Unlocked: Offline
Guerilla
10Score over 15,000 points in the Campaign meta-game on the first mission.
Unlocked: Offline
Demon
10Score over 15,000 points in the Campaign meta-game on the second mission.
Unlocked: Offline
Cavalier
10Score over 15,000 points in the Campaign meta-game on the third mission.
Unlocked: Offline
Askar
10Score over 15,000 points in the Campaign meta-game on the fourth mission.
Unlocked: Offline
Exterminator
10Score over 15,000 points in the Campaign meta-game on the fifth mission.
Unlocked: Offline
Ranger
10Score over 50,000 points in the Campaign meta-game on the sixth mission.
Unlocked: Offline
Vanguard
10Score over 50,000 points in the Campaign meta-game on the seventh mission.
Unlocked: Offline
Reclaimer
10Score over 15,000 points in the Campaign meta-game on the final mission.
Unlocked: Offline
Flag Dropped
25On a Legendary map, get 2 flag carrier kills during any ranked or social match.
Unlocked: 05 Oct 2008 16:53:04
Defend This
50On a Legendary map, get a flag melee kill during any ranked or social match.
Unlocked: 05 Oct 2008 16:44:43
On a Legendary map, get 3 Oddball melee kills during any ranked or social match.
Unlocked: 26 Sep 2008 11:12:44
On a Legendary map, get a Splatter Spree during any ranked or social match.
Unlocked: 24 Sep 2008 17:34:33
Road Rage
25On a Legendary map, get 5 Warthog chaingun kills during any ranked or social match.
Unlocked: 24 Sep 2008 09:30:17
On a Legendary map, get 3 assassinations during any ranked or social match.
Unlocked: 23 Sep 2008 16:54:50
On a Legendary map, get two Double Kills during any ranked or social match.
Unlocked: 23 Sep 2008 16:54:10
On a Mythic map, infect 2 humans during any ranked or social match.
Unlocked: 18 Jun 2009 19:54:21
On a Mythic map, kill 2 Zombies during any ranked or social match.
Unlocked: 18 Jun 2009 19:43:49
Killtacular
25On a Mythic map, get a Killtacular during any ranked or social match.
Unlocked: 25 Apr 2009 15:42:37
On a Mythic map, get a Bulltrue medal during any ranked or social match.
Unlocked: 25 Apr 2009 15:39:26
On a Mythic map, get a Perfection medal during any ranked or social match.
Unlocked: 02 Mar 2009 17:48:36
On a Mythic map, get a Killjoy medal during any ranked or social match.
Unlocked: 02 Mar 2009 17:17:04
On a Mythic map, get an Extermination during any ranked or social match.
Unlocked: 02 Mar 2009 17:14:13
Post Mortem
25On Orbital, get 2 Death From the Grave medals during any ranked or social match.
Unlocked: 27 Feb 2009 23:31:45
On Sandbox, find the hidden skull.
Unlocked: 27 Feb 2009 15:53:18
Hammer Time
25On Assembly, get 5 Hammer kills during any ranked or social match.
Unlocked: 27 Feb 2009 13:49:00
Tank Dropper
25On any Mythic map, get a kill on another player while in monitor mode.
Unlocked: 27 Feb 2009 13:31:12
On Orbital, find the hidden skull.
Unlocked: 27 Feb 2009 13:14:26
On Assembly, find the hidden skull.
Unlocked: 27 Feb 2009 13:11:46
Ghost Patrol
25On Longshore, get 3 kills with a Ghost during any ranked or social match.
Unlocked: 07 Oct 2009 11:21:04
On Heretic, get a Sword Spree during any ranked or social match.
Unlocked: 07 Oct 2009 09:30:34
Pull
25On Citadel, get a Shotgun Spree during any ranked or social match.
Unlocked: 07 Oct 2009 09:20:19
On Citadel, find the hidden skull.
Unlocked: Offline
On Heretic, find the hidden skull.
Unlocked: Offline
On Longshore, find the hidden skull.
Unlocked: Offline
Enter into any ranked or social playlist with 7 EXP on the 7th of the month.
Unlocked: 07 Feb 2009 11:02:55
Get to the rank of Lieutenant in any playlist in the new EXP progression system.
Unlocked: 26 Oct 2008 11:07:29
After 9/25/08, complete Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.
Unlocked: 05 Oct 2008 20:10:22
Find all the hidden skulls on the Mythic maps.
Unlocked: Offline