Completed a mission in Score Attack with at least 10,000 points.
Reached 50,000 points in Score Attack with a Skull multiplier of x2 or higher.
Completed a mission in Score Attack co-op, with all participants scoring at least 200,000 points.
Beat the par time of a mission in Score Attack.
Completed a mission in Score Attack with at least 500,000 points.
Successfully completed 5 Warzone Firefight matches.
Completed a Warzone Firefight match on 6 unique maps.
Earned a Mythic Boss Takedown in a Warzone Firefight match.
Found and claimed all Skulls.
Found and claimed all Intel.
Completed every co-op Mission on Heroic difficulty.
Completed any Mission with 3+ Skulls active on Heroic difficulty.
Won a match on all three original Warzone maps.
Completed The Breaking on Legendary difficulty without the entire fireteam dying.
Helped the Elite General charge the hill in Osiris on Heroic difficulty.
Traversed the canyon without a Phaeton in Reunion on Heroic difficulty.
Destroyed the Phantom at the Covenant camp in Reunion on Heroic difficulty.
Completed 5 matchmade games of Capture the Flag.
Completed 5 matchmade games of Strongholds.
Completed 5 matchmade games of Slayer.
Kept 6 miners alive at the elevator in Evacuation on Heroic difficulty.
Destroyed 10 walls or floors in Swords of Sanghelios.
Simultaneously assassinated two Elites in Blue Team co-op.
Teamed up in a vehicle to kill 30 enemies in Unconfirmed co-op.
Simultaneously destroyed 2 cores in Guardians on Heroic difficulty.
Used a Ground Pound on an exterior power core in Guardians on Heroic difficulty.
Simultaneously killed two Wardens in The Breaking on Heroic difficulty.
Found and claimed a Skull.
Operated four different vehicles at once in Mission 13 on Heroic difficulty.
Knocked two Hunters into the ocean during the Battle of Sunaion.
Killed a Grunt and smashed a grate with a Ground Pound in Battle of Sunaion.
Escaped the doomed Kraken by jumping onto a Phaeton piloted by a Spartan.
Qualified for a Competitive Skill Rating.
Completed Glassed without entering a vehicle.
Completed Glassed without any players using Smart-Link.
Completed every Mission of the game on Normal difficulty.
Completed every Mission of the game on Heroic difficulty.
Completed every Mission of the game on Legendary difficulty.
Completed every Mission of the game by yourself on Legendary difficulty.
Finished the 13th mission without losing the Scorpion on Legendary difficulty.
Escaped the Hunters in the lab and fought them in the hangar in Blue Team.
Completed Mission 15.
Completed Mission 14.
Completed Enemy Lines without destroying a Kraken turret.
Completed 5 matchmade games of Breakout.
Completed Swords of Sanghelios co-op with both Mantises on Heroic difficulty.
Completed Mission 13.
Completed Mission 12.
Finished Evacuation within 18:00 without dying on Heroic difficulty.
Killed an enemy that's had its armor repaired in Unconfirmed.
Completed any co-op Mission on Heroic difficulty.
Completed Mission 11.
Completed Mission 10.
Completed Mission 9.
Completed Mission 8.
Opened a Gold REQ Pack.
Completed 3 matchmade games of Warzone.
Called in a REQ that costs 5 Energy or more.
Killed a Legendary Boss in Warzone.
Completed Mission 7.
Spectated a game.
Changed your Spartan's gear in the Spartan Hub.
Changed your Service Tag in the Spartan Hub.
Changed your Emblem in the Spartan Hub.
Created and saved a Custom Game.
Completed Mission 6.
Completed Mission 5.
Completed Mission 4.
Completed Mission 3.
Completed Mission 2.
Completed Mission 1.
Commanded your team of Spartans in Osiris.
Found and claimed one piece of Intel.
