- Fear the Pink Mist
Killed 5 enemies with the needler in a ranked free for all playlist or in campaign.
Unlocked offline - 6 guides
- Landfall
Completed the first mission of the Campaign.
- Iron
Claimed Iron skull.
Unlocked offline - 3 guides
- Black Eye
Claimed Black Eye skull.
Unlocked offline - 3 guides
- Tough Luck
Claimed Tough Luck skull.
Unlocked offline - 3 guides
- Catch
Claimed Catch skull.
Unlocked offline - 5 guides
- Mythic
Claimed Mythic skull.
Unlocked offline - 3 guides
- Holdout
Completed the second mission of the Campaign.
- The Road
Completed the third mission of the Campaign.
- Assault
Completed the fourth mission of the Campaign.
- Refuge
Completed the sixth mission of the Campaign.
- Last Stand
Completed the seventh mission of the Campaign.
Unlocked offline - 2 guides
- Return
Completed the final mission of the Campaign.
- Fog
Claimed Fog skull.
Unlocked offline - 4 guides
- Famine
Claimed Famine skull.
Unlocked offline - 5 guides
- Thunderstorm
Claimed Thunderstorm skull.
Unlocked offline - 3 guides
- Headshot Honcho
Killed 10 enemies with headshots in a ranked free for all playlist or in campaign.
Unlocked offline - 5 guides
- Used Car Salesman
Destroyed a vehicle that has three enemies in it in a ranked playlist or in campaign.
Unlocked offline - 7 guides
- Cleansing
Completed the fifth mission of the Campaign.
- Campaign Complete: Heroic
Completed the Campaign on Heroic difficulty.
Unlocked offline - 2 guides
- Too Close to the Sun
Destroyed a banshee with the spartan laser or missile pod in a ranked playlist or in campaign.
Unlocked offline - 4 guides
- Cavalier
Earned over 15,000 points in the Campaign meta-game on the third mission.
Unlocked offline - 4 guides
- Exterminator
Earned over 15,000 points in the Campaign meta-game on the fifth mission.
Unlocked offline - 3 guides
- Two for One
Scored a Double Kill with a single spartan laser shot in a ranked free for all playlist.
15 July 2008 - 18 guides
- We’re in for some Chop
Destroyed an enemy vehicle with equipment in a ranked playlist or in campaign.
13 July 2008 - 3 guides
- Marathon Man
Accessed all Terminals in the Campaign.
13 July 2008 - 9 guides
- Ranger
Earned over 50,000 points in the Campaign meta-game on the sixth mission.
11 July 2008 - 6 guides
- Maybe Next Time Buddy
Boarded the same vehicle within 10 seconds after being boarded in any free for all playlist.
11 July 2008 - 7 guides
- Mongoose Mowdown
Splattered an enemy with the mongoose in a ranked free for all playlist.
09 July 2008 - 9 guides
- Steppin' Razor
Scored a Triple Kill with the sword in a ranked free for all playlist.
05 July 2008 - 7 guides
- Overkill
Killed 4 enemies within 4 seconds of one another in a ranked free for all playlist.
05 July 2008 - 9 guides
- Killing Frenzy
Killed 10 enemies without dying in any ranked free for all playlist.
21 May 2008 - 9 guides
- Campaign Complete: Legendary
Completed the Campaign on Legendary difficulty.
18 May 2008 - 17 guides
- Triple Kill
Killed 3 enemies within 4 seconds of one another in a ranked free for all playlist.
29 April 2008 - 6 guides
- Lee R Wilson Memorial
Scored 5 grenade sticks in any ranked free for all playlist.
29 April 2008 - 8 guides
- Reclaimer
Earned over 15,000 points in the Campaign meta-game on the final mission.
20 April 2008 - 4 guides
- Orpheus
Earned over 15,000 points in the Campaign meta-game on the eighth mission.
20 April 2008 - 4 guides
- Campaign Complete: Normal
Completed the Campaign on Normal difficulty.
- The Key
Completed the eighth mission of the Campaign.
- Vanguard
Earned over 50,000 points in the Campaign meta-game on the seventh mission.
20 April 2008 - 6 guides
- Askar
Earned over 15,000 points in the Campaign meta-game on the fourth mission.
19 April 2008 - 4 guides
- Demon
Earned over 15,000 points in the Campaign meta-game on the second mission.
19 April 2008 - 4 guides
- Guerilla
Earned over 15,000 points in the Campaign meta-game on the first mission.
19 April 2008 - 5 guides
- Tilt
Claimed Tilt skull.
16 February 2008 - 4 guides
- Spartan Officer
True veteran of many battles, you are a Spartan Officer.
13 February 2008 - 9 guides
- Up Close and Personal
Killed 5 enemies by melee or assassination in a ranked free for all playlist.
09 February 2008 - 2 guides
- UNSC Spartan
Promoted to Sergeant. Proven in combat, you are a Spartan.
05 February 2008 - 2 guides
- MVP
Earned the MVP in a ranked playlist.
31 January 2008 - 3 guides
- Graduate
Graduated from basic training. Stick with it to earn your Spartan Insignia.
30 January 2008 - 4 guides
- Alas, Poor Yorick
On a Legendary map, got 3 Oddball melee kills during a ranked or social match.
23 October 2008 - 9 guides
- Look Both Ways
On a Legendary map, got a Splatter Spree during a ranked or social match.
28 September 2008 - 9 guides
- Came… From… Behind
On a Legendary map, got 3 assassinations during a ranked or social match.
28 September 2008 - 4 guides
- Defend This
On a Legendary map, got a flag melee kill during a ranked or social match.
28 September 2008 - 5 guides
- Flag Dropped
On a Legendary map, got 2 flag carrier kills during a ranked or social match.
24 September 2008 - 6 guides
- Double Double
On a Legendary map, got two Double Kills during a ranked or social match.
24 September 2008 - 6 guides
- Road Rage
On a Legendary map, got 5 Warthog chaingun kills during a ranked or social match.
24 September 2008 - 7 guides
- Zombie Repeller
On a Mythic map, killed 2 Zombies during a ranked or social match.
31 May 2009 - 3 guides
- Delicious Brains
On a Mythic map, infected 2 humans during a ranked or social match.
31 May 2009 - 3 guides
- Killtacular
On a Mythic map, got a Killtacular during a ranked or social match.
05 April 2009 - 11 guides
- … Get the Horns
On a Mythic map, got a Bulltrue medal during a ranked or social match.
05 April 2009 - 13 guides
- Hammer Time
On Assembly, got 5 Hammer kills during a ranked or social match.
05 April 2009 - 4 guides
- Post Mortem
On Orbital, got 2 Death From the Grave medals during a ranked or social match.
29 March 2009 - 10 guides
- Awww, Too Bad
On a Mythic map, got a Killjoy medal during a ranked or social match.
29 March 2009 - 2 guides
- Assembly Skull
On Assembly, found the hidden skull.
22 March 2009 - 4 guides
- Orbital Skull
On Orbital, found the hidden skull.
22 March 2009 - 5 guides
- Sandbox Skull
On Sandbox, found the hidden skull.
22 March 2009 - 10 guides
- Tank Dropper
On a Mythic map, got a kill on another player while in monitor mode.
22 March 2009 - 14 guides
- Have Fun Respawning
On a Mythic map, get an Extermination during any ranked or social match.
Locked - 6 guides
- Save This Film
On a Mythic map, get a Perfection medal during any ranked or social match.
Locked - 9 guides