Extra Credit
10Complete 75 mission specific challenges
Unlocked: 03 Feb 2014 23:12:03
Complete all Operation F mission challenges
Unlocked: 03 Feb 2014 23:12:03
Prevent all Jackals from regenerating their shields in Operation B, Mission 3
Unlocked: 03 Feb 2014 02:07:31
Pension Plan
10Earn 25000 XP throughout your career
Unlocked: 03 Feb 2014 02:07:31
Complete Operation F, Mission 4 with the Blind and Thunderstorm Skulls active
Unlocked: 02 Feb 2014 01:35:27
Complete Operation E, Mission 1 with the Hollow and Black Eye Skulls active
Unlocked: 02 Feb 2014 01:29:01
Complete Operation F
Unlocked: 02 Feb 2014 01:22:44
Silvertip
10Destroy all Mega Turrets with the Grizzly tank in Operation F, Mission 2
Unlocked: 02 Feb 2014 01:11:44
117
20Earn all Gold stars
Unlocked: 02 Feb 2014 01:01:58
Tour of Duty
10Earn all Gold stars in Operation F
Unlocked: 02 Feb 2014 01:01:50
Earn all medals in the game at least once
Unlocked: 02 Feb 2014 01:00:22
Brute Force
10Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1
Unlocked: 09 Dec 2013 01:38:38
Prodigy
5Earn your first Gold star
Unlocked: 09 Dec 2013 01:33:01
Terminated
10Complete Operation E
Unlocked: 06 Dec 2013 01:58:59
Foot Soldier
10Finish the objective without using any vehicles/turrets in Operation E, Mission 4
Unlocked: 06 Dec 2013 01:48:25
Score a kill with every handheld weapon (excluding Rocket Launcher and Spartan Laser)
Unlocked: 06 Dec 2013 01:38:49
Use every armor ability at least once (excluding Overshield and Seeker Drone)
Unlocked: 06 Dec 2013 01:26:12
Evacuated
10Complete Operation D
Unlocked: 05 Dec 2013 01:51:06
Switched Off
10Complete Operation C
Unlocked: 04 Dec 2013 14:20:04
Kill a convoy target with every stationary gun in Operation C, Mission 3
Unlocked: 04 Dec 2013 13:11:59
Switched On
10Complete Operation B
Unlocked: 04 Dec 2013 00:30:09
Overrun
10Complete Operation A
Unlocked: 03 Dec 2013 23:59:13
Keep all Wolverines intact in Operation A, Mission 3
Unlocked: 03 Dec 2013 23:46:19
Recruit
5Earn a star of any type
Unlocked: 03 Dec 2013 23:30:07
Skull Combo
10Complete any mission with the maximum number of Skulls active
Unlocked: 03 Dec 2013 23:29:57