Defeat 30 enemies with the KAL 7

Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)

Make five enemies drop their grenade by shooting them

Successfully counter all of a Brute’s damage-giving attacks

Defeat 20 enemies with hand-to-hand combat

Kill 500 enemies using Melee weapons.

Get 100 Headshots.

Multi-kill -- 2 enemies with 1 Stalker-Pattern bolter shot.

Fight your way to the crashed Rok.

Multi-kill -- 5 enemies with 1 Frag grenade.

Kill 100 enemies.

Win without blocking in an online match.

Participate in any mode online.