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In the Belly of the Beast In Zetsubou No Shima, survive getting consumed.

Safari Tour Play at least one full round in every Official Map (Ranked Match)

Iron Mode Complete the game in Iron Mode.

Speed Slayer Kill the Breeder in less than 5 minutes in Nightfall in Regular or Hardcore difficulty.

Sub Zero Complete the "Arctic Recon" Special Ops mission on Veteran difficulty.

Throttled Survival Kill the Breeder while using a Relic in Nightfall in Regular or Hardcore difficulty.

Bulldozed In Ground Control, crush 25 enemies while driving the tank

Gest - Chapter XIII Finish the levels from Chapter XIII in Warrior difficulty

Professional Reach Rank 10 (Ranked Match)

Chimp on the Barbie In Ascension, kill a space monkey with a fire trap.

New Superpower Complete all China Rising Assignments

Survived Mayday Kill the Kraken for the first time in Mayday in Regular or Hardcore difficulty.

Der Meisterbogenschuetze In Der Eisendrache, obtain all of the ancient bows.

Targets Acquired Get past the first gate in Awakening in Regular or Hardcore difficulty.

Discriminating Buyer Use exactly one of each care package in the "Special Delivery" Special Ops mission.

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

Undiscovered Truths Find all the intel hidden in Nightfall.

Master of the reliquary Gather all the fingers of Frankenstein

Mr. Death Get all Trophies.

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

Burgertown Escort Service Rescue 1 survivor in Infection.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

Postmaster Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.

Come On And ... Slam 10 zombies at once in Outbreak.

The third faction Rescue all the Buddies from their respective predicaments

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

Skirmish - Chapter XIV Finish the levels from Chapter XIV in Squire difficulty

Two's Company, Four's a Party Complete any Adventure level with 4 players.

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

Egg-stra Devastation! Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.

Street Fighter Complete all Dragon's Teeth Assignments

Survivor Survive until Round 25 in Outbreak.

Alright, Alright Survive until round 10 in Infection.

The Ultimate Sacrifice In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.

PC Load Letter Use the 3D printer 15 times in a single match in Outbreak.

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.

Heavy Ordinance Specialist Destroy 50 Aerial Scorestreaks with Launchers in Multiplayer

To Jugger or to Jugger-Naut Kill all juggernauts after they land on Veteran difficulty in the "Vertigo" Special Ops mission.

That Party was Ace Ace every Adventure level in The Journey Home.

Mercy Kill 5 enemies while they are on fire in Chapter 3: Fire Sale

Escaped Awakening Escape Awakening for the first time in Regular or Hardcore difficulty.

Burning Inside Kill another player with Crucible in a Foundry Versus Match

Sack the Postman Post all 6 invitations for the party.

Annihilation Get 100 Elite Zombie Eliminations in Zombies

No Mo' Modi Get out of jail, but not for free

Egg-stra Awakening! Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.

It's a Trap! In Shi No Numa, kill at least one zombie with three different traps in a single round.

Nightfall Completionist Complete all challenges and kill the Breeder in Nightfall in Regular or Hardcore difficulty.

Going Up… In The Darkest Shore, unlock the Ubersprengen.