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Timing is Everything Kill the final 3 Ancestors within 10 seconds of killing the first Ancestor in Regular or Hardcore difficulty.

Popcorn Cook 50 zombies with the Magnetron in Infection.

None Left Standing In Der Eisendrache, kill every type of zombie using a minigun.

Crop Duster In Zetsubou No Shima, kill 10 zombies with a single shot of the KT-4.

Always Hard Kill the final Ancestor with a relic active in Hardcore difficulty.

Wardrobe Change In Revelations, wear three different hats.

Psycho Cellblock killer Finish 'Psycho Cellblock' on Insane

One Too Many In Zetsubou No Shima, throw up.

Seeds of Doubt In Zetsubou No Shima, the one must be saved.

Indirect Fire Kill 100 zombies with traps in Infection.

Cryogenic Slumber Party In Moon, complete Richtofen's Grand Scheme.

Assault With Battery In Zetsubou No Shima, electrocute a zombie with a shield.

Vaporeyezed In Gorod Krovi, use the Gigant Beam to kill 20 Zombies in one activation.

Let's Do This Again Next Week Play 3 games in the Brawl of the Week matchmaking queue.

Smooth Operator Defeat Oz in Descent.

Game Over, Man! Call in a rescue in Outbreak.

Love Tap Kill a Goliath with a melee attack in Infection.

Throw a Dog a Bone In Blood of the Dead, feed a wolf head from the Gondola, Citadel, and Model Industries in a single game

Climbing the Corporate Ladder Survive until round 25 in Infection.

Abandon Ship In Voyage of Despair, complete the Trial

Herbal Remedy In Zetsubou No Shima, use a plant to return to life.

Nah, I'm Good. Reach round 7 without anyone opening a door in Descent.

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

Old school Complete a level using only pistols

Wonderful In Revelations, kill 10 enemies in one shot with each wonder weapon.

Most Escape Alive In Blood of the Dead, escape

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

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

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

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

Legendary Become Legendary on one of the Skill Challenges in Skill Games

Hugs! Kill 20 enemies in a single burst of Explosive Touch in Carrier.

Ghost Town killer Finish 'Ghost Town' on Insane

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

Abandon All Hope Rescue 4 survivors in a single game of Infection.

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

Right of First Defusal Defuse 5 gas bombs in a single match in Carrier.

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

Take Off, Hoser! Ride Chompy for 5 minutes in a single match in Carrier.

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

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

Telefragathon Telefrag 50 enemies in a single match in Carrier.

Blood-Spattered Savior Rescue a total of 20 survivors in Infection.

Just Getting Started Win 10 matchmaking games.

Pure class Score by performing an outside of the foot free kick

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

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

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

Silver Lining Complete the Silver stage of all Skill Games

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