In Shangri-La, get something from the monkeys.

In Shangri-La, kill a Shrieker zombie while blinded by it.

In Call of the Dead, cut the lights on the Director.

In Call of the Dead, make a zombie explode using the V-R11.

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

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

In Ascension, escape on all 3 lunar landers.

Play Zork on the terminal.

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

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

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

Reach rank 10 in Combat Training.

Watch a film or clip with a friend.