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