Double Double

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

Awww, Too Bad

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

Defend This

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

Flag Dropped

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

Spartan Officer

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

MVP

Earned the MVP in a ranked playlist.

Maybe Next Time Buddy

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

Triple Kill

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

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.

Tilt

Claimed Tilt skull.

UNSC Spartan

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

Thunderstorm

Claimed Thunderstorm skull.

Famine

Claimed Famine skull.

Catch

Claimed Catch skull.

Tough Luck

Claimed Tough Luck skull.

Iron

Claimed Iron skull.

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.

Used Car Salesman

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

Guerilla

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

Campaign Complete: Heroic

Completed the Campaign on Heroic difficulty.

Campaign Complete: Normal

Completed the Campaign on Normal difficulty.

Return

Completed the final mission of the Campaign.

Mythic

Claimed Mythic skull.

The Key

Completed the eighth mission of the Campaign.

Last Stand

Completed the seventh mission of the Campaign.

Up Close and Personal

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

Landfall

Completed the first mission of the Campaign.

Graduate

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

Too Close to the Sun

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

Refuge

Completed the sixth mission of the Campaign.

Headshot Honcho

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

Cleansing

Completed the fifth mission of the Campaign.

Fog

Claimed Fog skull.

Assault

Completed the fourth mission of the Campaign.

The Road

Completed the third mission of the Campaign.

Holdout

Completed the second mission of the Campaign.

Fear the Pink Mist

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

Black Eye

Claimed Black Eye skull.