Achievement
Description
Value
117
Earn all Gold stars in all operation missions
60
Archeology
Complete Operation F
20
Brute Force
Finish the objectives using only the Brute Shot, melee and grenades in Operation D, Mission 1
20
Distinguished Service
Earn all medals in the game at least once
30
Dynamic Duo
Earn all Gold stars in all co-op missions
60
Escort Service
Keep all Wolverines intact in Operation A, Mission 3
10
Evacuated
Complete Operation D
20
Extermination
Kill 10,000 enemies in co-op
60
Extra Credit
Complete 75 challenges
30
Flooded
Complete all co-op missions
60
Foot Soldier
Finish the objective without using any vehicles/turrets in Operation E, Mission 4
20
Immune
Finish a co-op mission without becoming infected
100
Never Knew What Hit Them
Kill a convoy target with every stationary gun in Operation C, Mission 3
20
Nowhere to Hide
Prevent all Jackals from regenerating their shield in Operation B, Mission 3
20
Overachiever
Earn all co-op medals at least once
100
Overrun
Complete Operation A
20
Pension Plan
Earn 25000 Spartan Points throughout your career
20
Powered by MJOLNIR
Use every ability at least once (excluding Overshield and Seeker Drone)
20
Prodigy
Earn your first Gold star in an operation mission
10
Recruit
Earn a star of any type in an operation mission
10
Silvertip
Destroy all Mega Turrets with the Grizzly tank in Operation F, Mission 2
20
Skull Combo
Complete any mission with the maximum number of Skulls active
20
Switched Off
Complete Operation C
20
Switched On
Complete Operation B
20
Terminated
Complete Operation E
20
The Company of Strangers
Complete a co-op mission with at least 5 different players
20
The Enemy of my Friend
Get a higher individual score than your partner on all co-op missions
100
Vidmaster Challenge
Complete Operation 5, Mission 1 with the Hollow and Black Eye Skulls active
30
Vidmaster Challenge 2.0
Complete Operation F, Mission 4 with the Blind and Thunderstorm Skulls active
30
Weapon of Choice
Score a kill with every handheld weapon (excluding Rocket Launcher and Spartan Laser)
10