Create and save a Custom Game.

Unlocked: 10 Nov 2015 03:28:16

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

Unlocked: 10 Nov 2015 03:27:12

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

Unlocked: 10 Nov 2015 03:22:16

Find and claim all Skulls.

Unlocked: 10 Nov 2015 03:01:19

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

Unlocked: 10 Nov 2015 01:28:16

Complete Enemy Lines without destroying a Kraken turret.

Unlocked: 10 Nov 2015 01:24:48

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

Unlocked: 10 Nov 2015 01:13:51

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

Unlocked: 09 Nov 2015 01:23:07

Destroy 10 walls or floors in Swords of Sanghelios.

Unlocked: 09 Nov 2015 01:15:17

Complete Glassed without any players using Smart-Link.

Unlocked: 09 Nov 2015 01:04:20

Complete Glassed without entering a vehicle.

Unlocked: 09 Nov 2015 00:49:43

Complete every Mission of the game on Legendary difficulty.

Unlocked: 09 Nov 2015 00:29:25

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

Unlocked: 09 Nov 2015 00:29:25

Find and claim all Intel.

Unlocked: 08 Nov 2015 23:53:07

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

Unlocked: 06 Nov 2015 02:59:25

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

Unlocked: 04 Nov 2015 03:54:30

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

Unlocked: 04 Nov 2015 03:19:08

Simultaneously destroy 2 cores in Guardians on Heroic difficulty.

Unlocked: 04 Nov 2015 02:41:16

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

Unlocked: 04 Nov 2015 02:37:05

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

Unlocked: 04 Nov 2015 02:03:51

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

Unlocked: 04 Nov 2015 01:41:19

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

Unlocked: 04 Nov 2015 01:22:44

Simultaneously kill two Wardens in The Breaking on Heroic difficulty.

Unlocked: 03 Nov 2015 04:29:42

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

Unlocked: 03 Nov 2015 04:03:03

Spectate a game.

Unlocked: 30 Oct 2015 06:48:42

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

Unlocked: 30 Oct 2015 02:38:09

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

Unlocked: 30 Oct 2015 02:33:35

Simultaneously assassinate two Elites in Blue Team co-op.

Unlocked: 30 Oct 2015 02:29:53

Complete 5 matchmade games of Strongholds.

Unlocked: 30 Oct 2015 02:20:51

Win a match on all three original Warzone maps.

Unlocked: 30 Oct 2015 01:45:35

Kill a Legendary Boss in Warzone.

Unlocked: 30 Oct 2015 00:46:35

Complete every Mission of the game on Normal difficulty.

Unlocked: 28 Oct 2015 05:12:11

Complete every Mission of the game on Heroic difficulty.

Unlocked: 28 Oct 2015 05:12:11

Complete every co-op Mission on Heroic difficulty.

Unlocked: 28 Oct 2015 05:12:11

Complete Mission 15.

Unlocked: 28 Oct 2015 05:12:11

Complete Mission 14.

Unlocked: 28 Oct 2015 04:34:47

Complete Mission 13.

Unlocked: 28 Oct 2015 04:07:47

Complete Mission 12.

Unlocked: 28 Oct 2015 03:47:51

Complete Mission 11.

Unlocked: 28 Oct 2015 03:07:40

Complete Mission 10.

Unlocked: 28 Oct 2015 03:00:05

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

Unlocked: 28 Oct 2015 02:56:56

Complete Mission 9.

Unlocked: 28 Oct 2015 02:29:11

Complete Mission 8.

Unlocked: 28 Oct 2015 02:19:00

Complete Mission 7.

Unlocked: 28 Oct 2015 01:59:35

Complete Mission 6.

Unlocked: 28 Oct 2015 01:29:43

Command your team of Spartans in Osiris.

Unlocked: 28 Oct 2015 00:52:47

Complete 5 matchmade games of Capture the Flag.

Unlocked: 28 Oct 2015 00:34:24

Complete Mission 5.

Unlocked: 28 Oct 2015 00:25:32

Complete Mission 4.

Unlocked: 28 Oct 2015 00:01:17

Complete Mission 3.

Unlocked: 27 Oct 2015 23:55:45

Complete Mission 2.

Unlocked: 27 Oct 2015 23:21:33

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

Unlocked: 27 Oct 2015 23:17:04

Complete Mission 1.

Unlocked: 27 Oct 2015 22:40:09

Complete any co-op Mission on Heroic difficulty.

Unlocked: 27 Oct 2015 22:40:09

Find and claim a Skull.

Unlocked: 27 Oct 2015 22:30:24

Find and claim one piece of Intel.

Unlocked: 27 Oct 2015 22:24:03

Change your Spartan's gear in the Spartan Hub.

Unlocked: 27 Oct 2015 10:46:44

Complete 3 matchmade games of Warzone.

Unlocked: 27 Oct 2015 10:23:58

Call in a REQ that costs 5 Energy or more.

Unlocked: 27 Oct 2015 09:59:28

Complete 5 matchmade games of Breakout.

Unlocked: 27 Oct 2015 06:53:33

Qualify for a Competitive Skill Rating.

Unlocked: 27 Oct 2015 06:14:15

Complete 5 matchmade games of Slayer.

Unlocked: 27 Oct 2015 05:18:43

Open a Gold REQ Pack.

Unlocked: 27 Oct 2015 04:46:31

Change your Service Tag in the Spartan Hub.

Unlocked: 27 Oct 2015 04:26:08

Change your Emblem in the Spartan Hub.

Unlocked: 27 Oct 2015 04:05:32

Successfully complete 5 Warzone Firefight matches.

Unlocked: 21 Jul 2016 02:42:44

Complete a Warzone Firefight match on 6 unique maps.

Unlocked: 21 Jul 2016 01:52:17

Earn a Mythic Boss Takedown in a Warzone Firefight match.

Unlocked: 20 Jul 2016 01:14:22

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

Unlocked: 20 Jul 2016 00:30:18

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

Unlocked: 20 Jul 2016 00:15:22

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

Unlocked: 20 Jul 2016 00:15:22

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

Unlocked: 20 Jul 2016 00:00:34

Beat the par time of a mission in Score Attack.

Unlocked: 20 Jul 2016 00:00:34