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Exotic Exemplar Catch any exotic aberration.

Power Struggle In Classified, reach round 20 without turning on the power

It wasn't all a bad dream Complete the game on Nightmare difficulty

We've Only Just Begun In The Tortured Path, successfully escape from Into the Storm.

Most Escape Alive In Blood of the Dead, escape

Viktorious Revenge In Gorod Krovi, complete all solo Trials in one Zombies game.

Expansion Purchase the third shop upgrade

Small Consolation In Shangri-La, use the 31-79 JGb215 on each type of zombie.

Primordial Deviations Catch all aberrations in The Iron Rig (excluding exotics).

A Moment's Respite See an event activated by an ally's support skill.

Togetherness Complete all of an ally's Character Episodes.

Assassin Vs. Machine You completed Train Runner before the train arrives at the station

To the Rescue: Metal Slug 6 Rescue at least 10 prisoners in one Metal Slug 6 mission.

Brave New World Discover the Dark Playground

Web of Defeat In Zetsubou No Shima, remove webs in every possible way in one game.

Das ist gut In The Shadowed Throne, find the Ubersprengen.

The Doctor is In Use PhD Slider to fall 10 feet and kill 10 zombies at once

Sanguine Liberation Activate Blood Rage for the first time.

A New Dawn Vanquish the Vaal Oversoul.

Time Attack In Gorod Krovi, complete Time Attack: Round 20.

The Highest Office In Classified, reach round 20 without using an elevator

Saver++ Collect more than 100,000 gold

Zombie Fanatic In Blackout, unlock Bruno, Scarlett, Diego, Shaw, Dempsey, Takeo, Nikolai and Richtofen

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

One step forward Complete Find & Replace

TR's Secret Stash Find the Secret in Act 6.

Prestigious Award Attain max level or Prestige with 25 different weapons in Zombies

Karlan Engineering Destroy a Karlan controlled Siege Mech

Tenuous Grasp Find and then lose something valuable

Distorted Balance Witness a change in the Spiral Tree.

For The Good Of All In Revelations, the Key must be opened.

Vice Express Take the train

Zombiepult In Gorod Krovi, launch 10 zombies into the air at the same time.

Blackout Historian In Blackout, unlock Reznov, Mason, Woods and Menendez

Not so special Take down a member of Zell's guard

Preemptive Strike In Classified, kill 50 Nova 6 Crawlers without letting them explode in a single game

And The LAW Won Land a final blow on a Boss Mutation with the LAW.

This Damn Island In The Darkest Shore, explore the entire island.

Little Lost Girl In Origins, release Samantha.

Bring a knife to a gunfight Obtain your first melee weapon

Crawl for Help In Classified, while in last stand use a teleporter and then get revived in a single game

Love Kills Complete Love Kills

A Better Tomorrow In Revelations,complete the cycle.

First Melee Kill Perform your first melee kill

Defeat the Grub Buster Defeat the Grub Buster in the Mole Town Arena

Ground Control In Moon, prevent each excavator from breaching the base in one game.

No Secrets Find a secret room 10 times

Making Concessions Completed Making Concessions

First Melee Special Move Kill Kill an enemy using melee's special move

Senseless Axe of Violence In Blood of the Dead, kill 5 zombies with the Hell's Redeemer before it starts its return