Kill 50 Assault Marines/Raptors in mid-air.

Play 10 Multiplayer games as Space Marine and 10 Multiplayer games as Chaos Marine.

Have 10 times more kills than deaths in a single game of Annihilation.

Complete 10 armor challenges.

Play each class in Multiplayer.

Kill 100 enemies.

Complete 5 weapon challenges.

Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

Use the teleporter 8 times. (Map Pack 3 only)

Kill 40 zombies with the bowie knife. (Map Pack 3 only)

Use the Monkey Bomb. (Map Pack 3 only)

Open all doors in the map. (Map Pack 3 only)

Reached the garage without going into man-down state in Hit and Run