Complete all co-op missions

(5) 

Earn all co-op medals at least once

(11) 

Earn all Gold stars in all co-op missions

(17) 

Kill 10,000 enemies in co-op

(9) 

Complete a co-op mission with at least 5 different players

(12) 

Complete Operation A

Complete Operation B

Complete Operation C

Complete Operation D

Complete Operation E

Keep all Wolverines intact in Operation A, Mission 3

Finish the mission without any Jackal regenerating its shield in Operation B, Mission 3

Kill a convoy target with every stationary gun in Operation C, Mission 3

Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1

Finish the objective without using any vehicles/turrets in Operation E, Mission 4

Earn a star of any type in an operation mission

 

Earn your first Gold star in an operation mission

 

Earn all Gold stars in all operation missions

Earn all medals in the game at least once

Score a kill with every handheld weapon in the campaign

Use every ability in the campaign at least once

(2) 

Complete any mission with the maximum number of Skulls active

 

Complete Operation 5, Mission 1 with the Hollow and Black Eye Skulls active

Complete all campaign mission specific Assault Ops

Earn 25,000 XP throughout your career

Complete Operation F

Destroy all Mega Turrets with the Grizzly tank in Operation F, Mission 2

Complete Operation F, Mission 4 with the Blind and Thunderstorm Skulls active