XtraNorb

Uncle Time Finish the first mission for each of the 4 time trials.

Slaughterhouse Kill 50,000 total Enemies in MWZ

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

You Found Me! Discover and fight Hidden Kombatant 1 in Arcade Ladder

Third Eye Hit 20 opponents with weapons dropped as secondary weapons

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

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

Definition of courage Complete the game on Extreme difficulty

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

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

Rags To Riches Have $1 million dollars in the bank while playing in Los Angeles.

Soul Fulfilled Player level reached maximum.

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

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.

Shutout Win a game of soccer without the opposition scoring in the soccer game mode

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

Six Digits?!? Kill 100,000 zombies.

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

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

Help From My Friends Get at least a Bronze medal on 10 different co-op challenges.

I Like to Keep This Handy Kill 2 enemies with one shot with the shotgun

Telefragathon Telefrag 50 enemies in a single match in Carrier.

Once More Into The Fray Begin the hunt

Sellout Spent 250,000 fans - any mode

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

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

South Central Test Drive Take 1 South Central vehicle out for a test drive.

EXTRA: Para Kooleo Survive 20 minutes in The Lycaeum.

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

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

Tier 1 Completed the campaign on Tier 1 difficulty

Sudden Temptation Quick Battle: defeated all warriors.

Spy Master Jump through all the radar dishes in Unicorn Base.

MEAT IS MURDER Activate Bubby.

EXTRA: Penshin Facha Evolve the Penshin Fatcha.

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

Trans-Siberian Railway Drive 9,289km

Challenge Domination Get a Gold medal on all single-player challenges.

Little Lost Girl In Origins, release Samantha.

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

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

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

Unbreakable Survive an entire level without needing to be revived on normal difficulty or above

A Better Tomorrow In Revelations,complete the cycle.

Taste of Your Own Medicine Complete the first interrogation

The twister String together: wallclimb, turn, swing, wallclimb, turn, swing, jump. [Pure Time Trials]

How low can you go? Hit 18 enemies with a single shot of the LZ-52 Limbo in Carrier.

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

Buffing... Please Wait Grant your team a Perk 10 times