Complete Operation F, Mission 4 with the Blind and Thunderstorm Skulls active
Unlocked: 08 Jul 2014 04:31:25
Complete Operation E, Mission 1 with the Hollow and Black Eye Skulls active
Unlocked: 08 Jul 2014 03:13:09
Silvertip
10Destroy all Mega Turrets with the Grizzly tank in Operation F, Mission 2
Unlocked: 07 Jul 2014 20:36:42
Complete Operation F
Unlocked: 07 Jul 2014 20:13:46
Evacuated
10Complete Operation D
Unlocked: 07 Jul 2014 19:59:56
Terminated
10Complete Operation E
Unlocked: 07 Jul 2014 04:25:35
Switched Off
10Complete Operation C
Unlocked: 07 Jul 2014 04:16:25
Prevent all Jackals from regenerating their shields in Operation B, Mission 3
Unlocked: 07 Jul 2014 00:24:37
Foot Soldier
10Finish the objective without using any vehicles/turrets in Operation E, Mission 4
Unlocked: 06 Jul 2014 20:40:29
Brute Force
10Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1
Unlocked: 06 Jul 2014 20:37:14
Kill a convoy target with every stationary gun in Operation C, Mission 3
Unlocked: 06 Jul 2014 20:28:28
Switched On
10Complete Operation B
Unlocked: 06 Jul 2014 20:23:14
Extra Credit
10Complete 75 mission specific challenges
Unlocked: 06 Jul 2014 20:18:14
Complete all Operation F mission challenges
Unlocked: 06 Jul 2014 20:18:13
Overrun
10Complete Operation A
Unlocked: 04 Jul 2014 22:15:46
Skull Combo
10Complete any mission with the maximum number of Skulls active
Unlocked: 04 Jul 2014 22:08:42
Keep all Wolverines intact in Operation A, Mission 3
Unlocked: 04 Jul 2014 02:57:12
Use every armor ability at least once (excluding Overshield and Seeker Drone)
Unlocked: 04 Jul 2014 02:54:04
Recruit
5Earn a star of any type
Unlocked: 03 Jul 2014 22:56:18
Prodigy
5Earn your first Gold star
Unlocked: 03 Jul 2014 22:56:17
117
20Earn all Gold stars
Unlocked: 03 Jul 2014 22:56:17
Tour of Duty
10Earn all Gold stars in Operation F
Unlocked: 03 Jul 2014 22:56:17
Pension Plan
10Earn 25000 XP throughout your career
Unlocked: 03 Jul 2014 22:56:16
Earn all medals in the game at least once
Unlocked: 03 Jul 2014 22:53:31
Score a kill with every handheld weapon (excluding Rocket Launcher and Spartan Laser)
Unlocked: 03 Jul 2014 22:53:29