Silvertip
10Destroy all Mega Turrets with the Grizzly tank in Operation F, Mission 2
Unlocked: 07 Mar 2016 19:45:40
Kill a convoy target with every stationary gun in Operation C, Mission 3
Unlocked: 07 Mar 2016 18:57:36
Complete Operation F, Mission 4 with the Blind and Thunderstorm Skulls active
Unlocked: 29 Feb 2016 19:41:47
Complete Operation E, Mission 1 with the Hollow and Black Eye Skulls active
Unlocked: 29 Feb 2016 18:53:29
Prevent all Jackals from regenerating their shields in Operation B, Mission 3
Unlocked: 28 Feb 2016 19:20:45
Complete Operation F
Unlocked: 28 Feb 2016 12:32:24
Terminated
10Complete Operation E
Unlocked: 23 Feb 2016 20:59:45
Evacuated
10Complete Operation D
Unlocked: 23 Feb 2016 13:22:55
Switched Off
10Complete Operation C
Unlocked: 23 Feb 2016 13:17:47
Switched On
10Complete Operation B
Unlocked: 18 Feb 2016 13:11:12
Foot Soldier
10Finish the objective without using any vehicles/turrets in Operation E, Mission 4
Unlocked: 25 Jan 2016 11:34:25
Skull Combo
10Complete any mission with the maximum number of Skulls active
Unlocked: 25 Jan 2016 11:25:59
Overrun
10Complete Operation A
Unlocked: 25 Jan 2016 07:58:35
Keep all Wolverines intact in Operation A, Mission 3
Unlocked: 24 Jan 2016 13:01:03
Extra Credit
10Complete 75 mission specific challenges
Unlocked: 23 Jan 2016 23:35:17
Complete all Operation F mission challenges
Unlocked: 23 Jan 2016 23:35:17
Use every armor ability at least once (excluding Overshield and Seeker Drone)
Unlocked: 23 Jan 2016 23:34:23
Brute Force
10Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1
Unlocked: 23 Jan 2016 23:27:10
117
20Earn all Gold stars
Unlocked: 23 Jan 2016 22:52:04
Tour of Duty
10Earn all Gold stars in Operation F
Unlocked: 23 Jan 2016 22:52:04
Recruit
5Earn a star of any type
Unlocked: 23 Jan 2016 22:52:03
Prodigy
5Earn your first Gold star
Unlocked: 23 Jan 2016 22:52:03
Pension Plan
10Earn 25000 XP throughout your career
Unlocked: 23 Jan 2016 22:52:02
Earn all medals in the game at least once
Unlocked: 23 Jan 2016 22:50:37
Score a kill with every handheld weapon (excluding Rocket Launcher and Spartan Laser)
Unlocked: 23 Jan 2016 22:50:21