Survive a dog attack.

Operate an AC-130 gun ship.

Kill 5 enemies with one shot while in the AC-130 gunship.

Survive 3 days holding a bounty of $250 in all states.

Save Pvt. Roycewicz on the stairs.

Kill an enemy while blinded by a flashbang in the single player campaign.

Complete 'F.N.G.'.

Play 3 games in the Free-for-All matchmaking queue.

Play a matchmaking game.

Complete any special operation on Easy difficulty.

Achieve Rank 5.

Kill 10 Shieldbearers.