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It's Fricking Space Aliens! Find Area 52

Amazing Grace Recruit Grace's group

Max a Perk Max a perk

Tinkerer Upgrade a weapon

Enemy Within Stop the Nazi signal from Section F

Carrying the Torch Use the power armor

Déjà Vu Make the choice

Good Karma Crack the celerium worm.

Ship Shape Reinforcements on the way.

Showdown A duel between rivals

Dirty Business Listen and think before you shoot.

Giant Accomplishment Complete all challenges in Black Ops II.

Tower of Babble In TranZit, obey the voices.

I See Live People In Diner Turned, kill the human while its decoy is in play in a Public Match.

Polyarmory In Diner Turned, get a kill with each primary weapon in a Public Match.

Monkey See, Monkey Doom In Diner Turned, retrieve a chained Cymbal Monkey in a Public Match.

Playing with Power In Origins, build all elemental staffs in one game.

Overachiever In Origins, complete all 4 Challenges in one game.

Master of Disguise In Origins, use Zombie Blood to revive three players and activate a generator in one game.

I’m on a Tank! In Origins, ride the tank around the map without getting off.

All Your Base In Origins, activate all generators without allowing one to stop.

Revisionist Historian In Buried, rewrite history.

Mazed and Confused In Buried, survive an entire round within the maze on round 20 or higher.

Death From Below In Buried, drop the beat on 10 zombies in one game.

Candygram In Buried, make a candy delivery.

When the Revolution Comes In Buried, return to processing.

FSIRT Against the Wall In Buried, purchase the LSAT off the wall and Pack-a-Punch it.

Ectoplasmic Residue In Buried, acquire a perk for free.

I'm Your Huckleberry In Buried, access all areas with the help of your new friend in one game.

Shafted In Die Rise, use Pack-a-Punch and all perk machines in one game.

Vertigoner In Die Rise, fling 10 zombies in one game.

I'm My Own Best Friend In Die Rise, revive yourself.

Mad Without Power In Die Rise, reach round 10 before turning on the power.

Slippery When Undead In Die Rise, kill 5 zombies with a single shot from the Sliquifier.

High IQ Collect all intel.

Facing the Dragon In Die Rise, face the dragon head-on before reaching round 2.

Paranormal Progress In Mob of the Dead, open a door without spending points.

You Have No Power Over Me In TranZit, defeat "him" without being attacked by "him".

Standard Equipment May Vary In TranZit, acquire 4 different equippable items in 1 game.

Fuel Efficient In TranZit, use an alternative mode of transportation.

The Lights Of Their Eyes In Green Run, pacify at least 10 zombies with 1 EMP.

Undead Man's Party Bus In TranZit, complete all additions to the bus in 1 game.

Back in Time Use a future weapon in the past.

Dance On My Grave In Green Run, acquire your Tombstone.

Don't Fire Until You See In TranZit, have all doors opened without being set on fire.

Happy Hour In TranZit, buy 2 different perks before turning on the power.

A Burst of Flavor In Mob of the Dead, kill 10 zombies at once with a new beverage.

Trapped in Time In Mob of the Dead, use and upgrade all traps before round 10.

Pop Goes the Weasel In Mob of the Dead, break the cycle.

Making the Rounds In Mob of the Dead, complete the cycle 3 times.