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

Full Lockdown In Mob of the Dead, Brutus completes his patrol.

Waterlogged Gather information on Raul Menendez' suspected terrorist plot.

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

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

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

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

Welcome to the Penthouse Prestige once in multiplayer Public Match.

Little Lost Girl In Origins, release Samantha.

Let off some steam Find and turn the hidden valves in "Steampunk Party"

Party Animal Win 10 multiplayer games while playing in Party Games playlists.

Trained Up Win 10 multiplayer games while playing in Combat Training playlists.

Full steam ahead Complete "Steampunk Party"

Party Animal Start the party in "Steampunk Party"

Test Complete Complete "Test Chamber"

Need to vent Go through all the ventilation shafts in "Test Chamber"

Half-baked puzzle Find the cake in "Test Chamber"

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

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

Awaken the Gazebo In Buried, Pack-a-Punch a weapon during round 1 with no one using the bank or Weapon Locker.

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

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

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

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

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

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

Tower of Babble In TranZit, obey the voices.

Driven by Rage Take down Menendez and his operation.

Shifting Sands Gather intel on Raul Menendez from Mullah Rahmaan.

Gathering Storm Investigate the jungle facility.

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

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

Insert Coin Access the terminal and battle the forces of the Cosmic Silverback in Dead Ops Arcade.

Eaten by a Grue Play Zork on the terminal.

Just ask me nicely Break free from the torture chair.

Sally Likes Blood Demonstrate killer economic sensibilities by taking down 3 enemies with a single bullet.

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

See Me, Stab Me, Heal Me Fire a Pack-a-Punched Ballistic Knife at a downed ally to revive them from a distance.

The Collector Buy every weapon off the walls in a single Zombies game.

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

Just Gettin' Started Complete 1 challenge in any level.

No Man Left Behind Rescue Woods.

Big Leagues Start the Campaign.

Candygram In Buried, make a candy delivery.

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

Not a Gold Digger In Origins, share a weapon you dug up.

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

Revisionist Historian In Buried, rewrite history.

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

When the Revolution Comes In Buried, return to processing.