MVP

Earned the MVP in a ranked playlist.

Marathon Man

Accessed all Terminals in the Campaign.

Up Close and Personal

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

Double Double

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

Flag Dropped

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

Graduate

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

Awww, Too Bad

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

Assembly Skull

On Assembly, found the hidden skull.

Campaign Complete: Legendary

Completed the Campaign on Legendary difficulty.

Catch

Claimed Catch skull.

The Road

Completed the third mission of the Campaign.

Tough Luck

Claimed Tough Luck skull.

Holdout

Completed the second mission of the Campaign.

Mythic

Claimed Mythic skull.

The Key

Completed the eighth 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.

Used Car Salesman

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

Fog

Claimed Fog skull.

Assault

Completed the fourth mission of the Campaign.

Too Close to the Sun

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

Campaign Complete: Normal

Completed the Campaign on Normal difficulty.

Return

Completed the final mission of the Campaign.

Longshore Skull

On Longshore, found the hidden skull.

Campaign Complete: Heroic

Completed the Campaign on Heroic difficulty.

Citadel Skull

On Citadel, found the hidden skull.

Thunderstorm

Claimed Thunderstorm skull.

Black Eye

Claimed Black Eye skull.

Heretic Skull

On Heretic, found the hidden skull.

Landfall

Completed the first mission of the Campaign.

Iron

Claimed Iron skull.

Vidmaster Challenge: Brainpan

Found all the hidden skulls on the Mythic maps.

Sandbox Skull

On Sandbox, found the hidden skull.

Tilt

Claimed Tilt skull.

Refuge

Completed the sixth mission of the Campaign.

Famine

Claimed Famine skull.

Tank Dropper

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

Fear the Pink Mist

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

Last Stand

Completed the seventh mission of the Campaign.

Orbital Skull

On Orbital, found the hidden skull.