Defeat 20 enemies with hand-to-hand combat

Flip 10 Big Tip enemies with one tip

Kill Poseidon

Cause the Basilisk to retreat

Good guys stand up and take the heat.

Good guys feed the needy.

Survive 1 wave in a Special Ops Survival game.

Get 30 headshots while scoped in with the Fareye or Marksman in the single player Campaign.

Kill 50 enemies through solid matter with the Auger in the single player Campaign.

Collect 5 pieces of intel in the single player Campaign.

Kill 40 hybrids in the single player Campaign.

Defeat a Majini with a headshot while it's jumping.

Defeat 30 enemies with the Longbow.