In Call of the Dead, send the crew to Paradise in solo or co-op.

Kill 4 enemies in a row while downed in Special Ops.

Kill 2 enemies with a single bullet in Single Player or Special Ops.

Find a secure place to hide and re-enter the Animus.

Change into 10 different pieces of clothing

Survive a banzai attack. (Solo only)

Kill the Pentagon thief before it can steal your load-out.

Shoot at or be shot by an ally with a Pack-a-Punch crossbow and kill six zombies with the explosion.

Use only dual wield weapons to escape Kowloon.

In Ascension, Pack-a-Punch a weapon before round 8.

Use no more than 6 TOW guided missiles to destroy the tanks in the defense of Khe Sanh.

In Dead Ops Arcade, use a Speed Boost to blast through 20 or more enemies at one time.

Fire a Pack-a-Punched Ballistic Knife at a downed ally to revive them from a distance.