Complete every Mission of the game on Normal difficulty.

Unlocked: 08 Aug 2016 20:59:44

Complete every Mission of the game on Heroic difficulty.

Unlocked: 08 Aug 2016 20:59:44

Complete Mission 15.

Unlocked: 08 Aug 2016 20:59:42

Use a Ground Pound on an exterior power core in Guardians on Heroic difficulty.

Unlocked: 08 Aug 2016 20:23:24

Complete Mission 14.

Unlocked: 03 Aug 2016 05:54:09

Complete Mission 13.

Unlocked: 03 Aug 2016 05:19:37

Complete Mission 12.

Unlocked: 03 Aug 2016 04:49:59

Complete Mission 11.

Unlocked: 03 Aug 2016 04:06:30

Complete Mission 10.

Unlocked: 03 Aug 2016 04:04:45

Complete Enemy Lines without destroying a Kraken turret.

Unlocked: 03 Aug 2016 04:04:43

Complete any Mission with 3+ Skulls active on Heroic difficulty.

Unlocked: 23 Feb 2016 01:51:34

Complete Mission 9.

Unlocked: 23 Feb 2016 01:51:34

Complete Mission 8.

Unlocked: 23 Feb 2016 01:34:19

Complete Mission 7.

Unlocked: 23 Feb 2016 00:50:40

Complete Mission 6.

Unlocked: 03 Feb 2016 04:32:34

Team up in a vehicle to kill 30 enemies in Unconfirmed co-op.

Unlocked: 03 Feb 2016 03:56:51

Complete Glassed without entering a vehicle.

Unlocked: 03 Feb 2016 03:43:59

Simultaneously assassinate two Elites in Blue Team co-op.

Unlocked: 03 Feb 2016 03:23:25

Find and claim a Skull.

Unlocked: 03 Feb 2016 00:11:37

Complete Mission 5.

Unlocked: 02 Feb 2016 23:47:58

Kill an enemy that's had its armor repaired in Unconfirmed.

Unlocked: 02 Feb 2016 23:20:33

Complete Mission 4.

Unlocked: 02 Feb 2016 23:10:08

Complete Mission 3.

Unlocked: 02 Feb 2016 14:24:12

Complete Mission 2.

Unlocked: 02 Feb 2016 13:57:49

Escape the Hunters in the lab and fight them in the hangar in Blue Team.

Unlocked: 02 Feb 2016 13:54:09

Complete Mission 1.

Unlocked: 02 Feb 2016 13:15:11

Complete any co-op Mission on Heroic difficulty.

Unlocked: 02 Feb 2016 13:15:11

Find and claim one piece of Intel.

Unlocked: 15 Dec 2015 19:53:26

Command your team of Spartans in Osiris.

Unlocked: 15 Dec 2015 19:47:31

Complete 5 matchmade games of Strongholds.

Unlocked: 10 Nov 2015 03:43:31

Complete 5 matchmade games of Capture the Flag.

Unlocked: 09 Nov 2015 23:20:03

Win a match on all three original Warzone maps.

Unlocked: 06 Nov 2015 18:24:08

Complete 5 matchmade games of Breakout.

Unlocked: 06 Nov 2015 17:09:01

Create and save a Custom Game.

Unlocked: 06 Nov 2015 13:59:33

Change your Emblem in the Spartan Hub.

Unlocked: 04 Nov 2015 22:12:29

Spectate a game.

Unlocked: 04 Nov 2015 21:49:28

Qualify for a Competitive Skill Rating.

Unlocked: 04 Nov 2015 20:25:50

Open a Gold REQ Pack.

Unlocked: 04 Nov 2015 20:07:28

Complete 5 matchmade games of Slayer.

Unlocked: 04 Nov 2015 19:30:29

Change your Spartan's gear in the Spartan Hub.

Unlocked: 04 Nov 2015 19:01:57

Complete 3 matchmade games of Warzone.

Unlocked: 03 Nov 2015 20:08:58

Call in a REQ that costs 5 Energy or more.

Unlocked: 03 Nov 2015 19:56:32

Kill a Legendary Boss in Warzone.

Unlocked: 03 Nov 2015 19:48:48

Change your Service Tag in the Spartan Hub.

Unlocked: 03 Nov 2015 19:00:35

Complete every Mission of the game on Legendary difficulty.

Find and claim all Intel.

Finish Evacuation within 18:00 without dying on Heroic difficulty.

Find and claim all Skulls.

Help the Elite General charge the hill in Osiris on Heroic difficulty.

Complete Glassed without any players using Smart-Link.

Keep 6 miners alive at the elevator in Evacuation on Heroic difficulty.

Traverse the canyon without a Phaeton in Reunion on Heroic difficulty.

Destroy the Phantom at the Covenant camp in Reunion on Heroic difficulty.

Destroy 10 walls or floors in Swords of Sanghelios.

Complete Swords of Sanghelios co-op with both Mantises on Heroic difficulty.

Escape the doomed Kraken by jumping onto a Phaeton piloted by a Spartan.

Kill a Grunt and smash a grate with a Ground Pound in Battle of Sunaion.

Knock two Hunters into the ocean during the Battle of Sunaion.

Finish the 13th mission without losing the Scorpion on Legendary difficulty.

Operate four different vehicles at once in Mission 13 on Heroic difficulty.

Complete The Breaking on Legendary difficulty without the entire fireteam dying.

Simultaneously kill two Wardens in The Breaking on Heroic difficulty.

Simultaneously destroy 2 cores in Guardians on Heroic difficulty.

Complete every Mission of the game by yourself on Legendary difficulty.

Complete every co-op Mission on Heroic difficulty.

Complete a Warzone Firefight match on 6 unique maps.

Unlocked: 04 Jul 2016 19:09:56

Reach 50,000 points in Score Attack with a Skull multiplier of x2 or higher.

Unlocked: 04 Jul 2016 18:09:47

Complete a mission in Score Attack co-op, with all participants scoring at least 200,000 points.

Unlocked: 04 Jul 2016 18:09:47

Beat the par time of a mission in Score Attack.

Unlocked: 04 Jul 2016 18:09:47

Successfully complete 5 Warzone Firefight matches.

Unlocked: 01 Jul 2016 05:11:34

Earn a Mythic Boss Takedown in a Warzone Firefight match.

Unlocked: 30 Jun 2016 20:34:08

Complete a mission in Score Attack with at least 10,000 points.

Unlocked: 30 Jun 2016 18:24:56

Complete a mission in Score Attack with at least 500,000 points.