Campaign Complete: Normal
Completed the Campaign on Normal difficulty.
125 
Campaign Complete: Heroic
Completed the Campaign on Heroic difficulty.
125 
Campaign Complete: Legendary
Completed the Campaign on Legendary difficulty.
125 
Return
Completed the final mission of the Campaign.
50 
Came… From… Behind
On a Legendary map, got 3 assassinations during a ranked or social match.
50 
Defend This
On a Legendary map, got a flag melee kill during a ranked or social match.
50 
Look Both Ways
On a Legendary map, got a Splatter Spree during a ranked or social match.
50 
Last Stand
Completed the seventh mission of the Campaign.
40 
The Key
Completed the eighth mission of the Campaign.
40 
Marathon Man
Accessed all Terminals in the Campaign.
40 
Cleansing
Completed the fifth mission of the Campaign.
30 
Refuge
Completed the sixth mission of the Campaign.
30 
Assault
Completed the fourth mission of the Campaign.
30 
Spartan Officer
True veteran of many battles, you are a Spartan Officer.
25 
Double Double
On a Legendary map, got two Double Kills during a ranked or social match.
25 
Alas, Poor Yorick
On a Legendary map, got 3 Oddball melee kills during a ranked or social match.
25 
Flag Dropped
On a Legendary map, got 2 flag carrier kills during a ranked or social match.
25 
Road Rage
On a Legendary map, got 5 Warthog chaingun kills during a ranked or social match.
25 
Hammer Time
On Assembly, got 5 Hammer kills during a ranked or social match.
25 
Pull
On Citadel, got a Shotgun Spree during a ranked or social match.
25 
Blades of Fury
On Heretic, got a Sword Spree during a ranked or social match.
25 
Ghost Patrol
On Longshore, got 3 kills with a Ghost during a ranked or social match.
25 
Post Mortem
On Orbital, got 2 Death From the Grave medals during a ranked or social match.
25 
… Get the Horns
On a Mythic map, got a Bulltrue medal during a ranked or social match.
25 
Awww, Too Bad
On a Mythic map, got a Killjoy medal during a ranked or social match.
25 
Killtacular
On a Mythic map, got a Killtacular during a ranked or social match.
25 
Have Fun Respawning
On a Mythic map, got an Extermination during a ranked or social match.
25 
Save This Film
On a Mythic map, got a Perfection medal during a ranked or social match.
25 
Delicious Brains
On a Mythic map, infected 2 humans during a ranked or social match.
25 
Zombie Repeller
On a Mythic map, killed 2 Zombies during a ranked or social match.
25 
Tank Dropper
On a Mythic map, got a kill on another player while in monitor mode.
25 
Assembly Skull
On Assembly, found the hidden skull.
25 
Citadel Skull
On Citadel, found the hidden skull.
25 
Heretic Skull
On Heretic, found the hidden skull.
25 
Longshore Skull
On Longshore, found the hidden skull.
25 
Orbital Skull
On Orbital, found the hidden skull.
25 
Sandbox Skull
On Sandbox, found the hidden skull.
25 
Vidmaster Challenge: Brainpan
Found all the hidden skulls on the Mythic maps.
25 
Landfall
Completed the first mission of the Campaign.
20 
Holdout
Completed the second mission of the Campaign.
20 
The Road
Completed the third mission of the Campaign.
20 
UNSC Spartan
Promoted to Sergeant. Proven in combat, you are a Spartan.
15 
Iron
Claimed Iron skull.
10 
Black Eye
Claimed Black Eye skull.
10 
Tough Luck
Claimed Tough Luck skull.
10 
Catch
Claimed Catch skull.
10 
Fog
Claimed Fog skull.
10 
Famine
Claimed Famine skull.
10 
Thunderstorm
Claimed Thunderstorm skull.
10 
Tilt
Claimed Tilt skull.
10 
Mythic
Claimed Mythic skull.
10 
Graduate
Graduated from basic training. Stick with it to earn your Spartan Insignia.
10 
Guerilla
Earned over 15,000 points in the Campaign meta-game on the first mission.
10 
Demon
Earned over 15,000 points in the Campaign meta-game on the second mission.
10 
Cavalier
Earned over 15,000 points in the Campaign meta-game on the third mission.
10 
Askar
Earned over 15,000 points in the Campaign meta-game on the fourth mission.
10 
Exterminator
Earned over 15,000 points in the Campaign meta-game on the fifth mission.
10 
Ranger
Earned over 50,000 points in the Campaign meta-game on the sixth mission.
10 
Vanguard
Earned over 50,000 points in the Campaign meta-game on the seventh mission.
10 
Orpheus
Earned over 15,000 points in the Campaign meta-game on the eighth mission.
10 
Reclaimer
Earned over 15,000 points in the Campaign meta-game on the final mission.
10 
Two for One
Scored a Double Kill with a single spartan laser shot in a ranked free for all playlist.
5 
Too Close to the Sun
Destroyed a banshee with the spartan laser or missile pod in a ranked playlist or in campaign.
5 
Triple Kill
Killed 3 enemies within 4 seconds of one another in a ranked free for all playlist.
5 
Overkill
Killed 4 enemies within 4 seconds of one another in a ranked free for all playlist.
5 
Lee R Wilson Memorial
Scored 5 grenade sticks in any ranked free for all playlist.
5 
We’re in for some Chop
Destroyed an enemy vehicle with equipment in a ranked playlist or in campaign.
5 
Killing Frenzy
Killed 10 enemies without dying in any ranked free for all playlist.
5 
Steppin' Razor
Scored a Triple Kill with the sword in a ranked free for all playlist.
5 
Mongoose Mowdown
Splattered an enemy with the mongoose in a ranked free for all playlist.
5 
Up Close and Personal
Killed 5 enemies by melee or assassination in a ranked free for all playlist.
5 
Fear the Pink Mist
Killed 5 enemies with the needler in a ranked free for all playlist or in campaign.
5 
Headshot Honcho
Killed 10 enemies with headshots in a ranked free for all playlist or in campaign.
5 
Used Car Salesman
Destroyed a vehicle that has three enemies in it in a ranked playlist or in campaign.
5 
MVP
Earned the MVP in a ranked playlist.
5 
Maybe Next Time Buddy
Boarded the same vehicle within 10 seconds after being boarded in any free for all playlist.
5 
Vidmaster Challenge: Annual
After 9/25/08, completed Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.
Vidmaster Challenge: Lightswitch
Got the rank of Lieutenant in any playlist in the new EXP progression system.
Vidmaster Challenge: 7 on 7
Entered into a ranked or social playlist with 7 EXP on the 7th of the month.