117 (20)
Earn all Gold stars
Brute Force (10)
Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1
Distinguished Service (15)
Earn all medals in the game at least once
Escort Service (5)
Keep all Wolverines intact in Operation A, Mission 3
Evacuated (10)
Complete Operation D
Extra Credit (10)
Complete 75 challenges
Foot Soldier (10)
Finish the objective without using any vehicles/turrets in Operation E, Mission 4
Never Knew What Hit Them (10)
Kill a convoy target with every stationary gun in Operation C, Mission 3
Nowhere to Hide (10)
Prevent all Jackals from regenerating their shields in Operation B, Mission 3
Overrun (10)
Complete Operation A
Pension Plan (10)
Earn 25000 XP throughout your career
Powered by MJOLNIR (10)
Use every armor ability at least once (excluding Overshield and Seeker Drone)
Prodigy (5)
Earn your first Gold star
Recruit (5)
Earn a star of any type
Skull Combo (10)
Complete any mission with the maximum number of Skulls active
Switched Off (10)
Complete Operation C
Switched On (10)
Complete Operation B
Terminated (10)
Complete Operation E
Vidmaster Challenge (15)
Complete Operation E, Mission 1 with the Hollow and Black Eye Skulls active
Weapon of Choice (5)
Score a kill with every handheld weapon (excluding Rocket Launcher and Spartan Laser)