BackClane

Truly Human Defeat Sundowner without taking any damage on Hard difficulty or above.

Marksman Destroy an enemy with a shot fired from 300 meters away.

Leaving a Fine Lookin' Fossil Hold a 'Proud Hero' pose to your demise, dressed in an Excavator outfit

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

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

Chosen by History Defeat Samuel without taking any damage on Hard difficulty or above.

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

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

Captive Complete mission: Captive

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

Window Shopping Let the wind take you through

Terrible Terrible Damage! Inflict over 20,000,000 total damage.

V-G-G, Vic Gotta Go! Listen to your owner's opinion on Vic.

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

Triple Trouble Try for a 3 chain combo!

Telefragathon Telefrag 50 enemies in a single match in Carrier.

Trying to Get "Trial and Error"? Kill yourself 1000 times.

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

BlueGrass Is Still the Best Unlock all the Perks

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

Oh, My Bad Kill your friends 1000 times.

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

Valley Blue clear Complete all Blue Valley maps (Any medal)

Wizard's Diploma Beat the five base Challenges on Normal difficulty.

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

Go-Getter Complete 25 Side Missions.

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

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

Archmage Kill 10,000 enemies.

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

Little Lost Girl In Origins, release Samantha.

MEAT IS MURDER Activate Bubby.

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

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

Illithid Enclave Complete the quest: Illithid Enclave

My Friend Complete the Main Mission "The Enemy of my Enemy".

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

Pent-up-agon In Classified, complete 5 consecutive rounds without leaving the war room elevator in a single game

Coast 2 Coast Cross the water with a teleport grenade in Descent.

If It Bleeds, We Can Kill It. Complete the Main Mission "A Wrench in the Works".

A Better Tomorrow In Revelations,complete the cycle.

Professor's Diploma Beat the five base Challenges on Hard difficulty.

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

Devils Defeat 500 Devils

How the mighty have fallen! Defeat Oz... again in Descent.

Act 5 Veteran Complete all Act 5 maps on Veteran difficulty or higher.

Sage's Diploma Beat the five base Challenges on Bananas difficulty.

Genius Destroyer Defeat Monsoon without taking any damage on Hard difficulty or above.

Mad Hops Jump over 4 live sharks in 10 seconds in Carrier.