Pull

On Citadel, got a Shotgun Spree during a ranked or social match.

Ghost Patrol

On Longshore, got 3 kills with a Ghost during a ranked or social match.

Blades of Fury

On Heretic, got a Sword Spree during a ranked or social match.

Vidmaster Challenge: Brainpan

Found all the hidden skulls on the Mythic maps.

Citadel Skull

On Citadel, found the hidden skull.

Heretic Skull

On Heretic, found the hidden skull.

Longshore Skull

On Longshore, found the hidden skull.

Zombie Repeller

On a Mythic map, killed 2 Zombies during a ranked or social match.

Delicious Brains

On a Mythic map, infected 2 humans during a ranked or social match.

Killtacular

On a Mythic map, got a Killtacular during a ranked or social match.

Save This Film

On a Mythic map, got a Perfection medal during a ranked or social match.

Have Fun Respawning

On a Mythic map, got an Extermination during a ranked or social match.

Look Both Ways

On a Legendary map, got a Splatter Spree during a ranked or social match.

… Get the Horns

On a Mythic map, got a Bulltrue medal during a ranked or social match.

Post Mortem

On Orbital, got 2 Death From the Grave medals during a ranked or social match.

Awww, Too Bad

On a Mythic map, got a Killjoy medal during a ranked or social match.

Sandbox Skull

On Sandbox, found the hidden skull.

Hammer Time

On Assembly, got 5 Hammer kills during a ranked or social match.

Assembly Skull

On Assembly, found the hidden skull.

Orbital Skull

On Orbital, found the hidden skull.

Tank Dropper

On a Mythic map, got a kill on another player while in monitor mode.

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.

Vidmaster Challenge: Annual

After 9/25/08, completed Halo on 4-player Legendary LIVE co-op, with Iron, and everyone in Ghosts.

Alas, Poor Yorick

On a Legendary map, got 3 Oddball melee kills during a ranked or social match.

Flag Dropped

On a Legendary map, got 2 flag carrier kills during a ranked or social match.

Defend This

On a Legendary map, got a flag melee kill during a ranked or social match.

Road Rage

On a Legendary map, got 5 Warthog chaingun kills during a ranked or social match.

Double Double

On a Legendary map, got two Double Kills during a ranked or social match.

Came… From… Behind

On a Legendary map, got 3 assassinations during a ranked or social match.

Two for One

Scored a Double Kill with a single spartan laser shot in a ranked free for all playlist.

Steppin' Razor

Scored a Triple Kill with the sword in a ranked free for all playlist.

Overkill

Killed 4 enemies within 4 seconds of one another in a ranked free for all playlist.

Catch

Claimed Catch skull.

Maybe Next Time Buddy

Boarded the same vehicle within 10 seconds after being boarded in any free for all playlist.

We’re in for some Chop

Destroyed an enemy vehicle with equipment in a ranked playlist or in campaign.

Marathon Man

Accessed all Terminals in the Campaign.

Vanguard

Earned over 50,000 points in the Campaign meta-game on the seventh mission.

Ranger

Earned over 50,000 points in the Campaign meta-game on the sixth mission.

Spartan Officer

True veteran of many battles, you are a Spartan Officer.

Headshot Honcho

Killed 10 enemies with headshots in a ranked free for all playlist or in campaign.

Triple Kill

Killed 3 enemies within 4 seconds of one another in a ranked free for all playlist.

Orpheus

Earned over 15,000 points in the Campaign meta-game on the eighth mission.

Reclaimer

Earned over 15,000 points in the Campaign meta-game on the final mission.

Guerilla

Earned over 15,000 points in the Campaign meta-game on the first mission.

UNSC Spartan

Promoted to Sergeant. Proven in combat, you are a Spartan.

Lee R Wilson Memorial

Scored 5 grenade sticks in any ranked free for all playlist.

Mongoose Mowdown

Splattered an enemy with the mongoose in a ranked free for all playlist.

Exterminator

Earned over 15,000 points in the Campaign meta-game on the fifth mission.

Askar

Earned over 15,000 points in the Campaign meta-game on the fourth mission.

Cavalier

Earned over 15,000 points in the Campaign meta-game on the third mission.

Demon

Earned over 15,000 points in the Campaign meta-game on the second mission.

MVP

Earned the MVP in a ranked playlist.

Killing Frenzy

Killed 10 enemies without dying in any ranked free for all playlist.

Campaign Complete: Heroic

Completed the Campaign on Heroic difficulty.

Campaign Complete: Legendary

Completed the Campaign on Legendary difficulty.

Famine

Claimed Famine skull.

Tough Luck

Claimed Tough Luck skull.

Campaign Complete: Normal

Completed the Campaign on Normal difficulty.

Cleansing

Completed the fifth mission of the Campaign.

Fog

Claimed Fog skull.

Assault

Completed the fourth mission of the Campaign.

Return

Completed the final mission of the Campaign.

Mythic

Claimed Mythic skull.

The Key

Completed the eighth mission of the Campaign.

Tilt

Claimed Tilt skull.

Last Stand

Completed the seventh mission of the Campaign.

Thunderstorm

Claimed Thunderstorm skull.

Too Close to the Sun

Destroyed a banshee with the spartan laser or missile pod in a ranked playlist or in campaign.

Black Eye

Claimed Black Eye skull.

Iron

Claimed Iron skull.

Refuge

Completed the sixth mission of the Campaign.

Up Close and Personal

Killed 5 enemies by melee or assassination in a ranked free for all playlist.

Graduate

Graduated from basic training. Stick with it to earn your Spartan Insignia.

Holdout

Completed the second mission of the Campaign.

Landfall

Completed the first mission of the Campaign.

Fear the Pink Mist

Killed 5 enemies with the needler in a ranked free for all playlist or in campaign.

The Road

Completed the third mission of the Campaign.

Used Car Salesman

Destroyed a vehicle that has three enemies in it in a ranked playlist or in campaign.