ZMD410

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

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

Professional Reach Rank 10 (Ranked Match)

Small and Lethal Unlock all Sidearms

Chapter 2 Speedrun Complete a Speedrun of Chapter 2 below the target time.

Chapter 4 Speedrun Complete a Speedrun of Chapter 4 below the target time.

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

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

Chapter 3 Speedrun Complete a Speedrun of Chapter 3 below the target time.

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

Undiscovered Truths Find all the intel hidden in Nightfall.

Eh...what's up, doc? In cooperative mode, revive wounded players 5 times.

Gotta Catch'em All Collect all secrets.

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

Acquire Waffle Weapons! Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

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

Undead Head Harvester Consecutively kill 25 enemies with a headshot

Better Safe Than Sorry Unlock all Secondary Weapons

You're Not Worthy As My Opponent Breach: Send 3 Challenges.

He Talked Too Much Defeat Emerson Miller

The third faction Rescue all the Buddies from their respective predicaments

Last Blood At the end of Guns of Stygia, kill all the enemies on the walkways before the explosions do

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

Chapter 6 Speedrun Complete a Speedrun of Chapter 6 below the target time.

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

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

Street Fighter Complete all Dragon's Teeth Assignments

Harvester Of Sorrow Complete the game on Expert

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

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

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

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

Collector Loot 10 Superior or Custom items.

Freedom! Free one bird

Chapter 5 Speedrun Complete a Speedrun of Chapter 5 below the target time.

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

Up-Lifting On Monorail Factory, kill all enemies whilst riding the lift

Chapter 8 Speedrun Complete a Speedrun of Chapter 8 below the target time.

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

Chapter 7 Speedrun Complete a Speedrun of Chapter 7 below the target time.

It's a Trap! Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)

Skitchin' Reach 200 km/h with the Hoverboard for 10 seconds while grappled to a vehicle

Archivist Find 30 of 61 News Pickups in the Single Player Campaign

Chapter 9 Speedrun Complete a Speedrun of Chapter 9 below the target time.

Go Figure Plant ShadowChild's figurine.

Sack the Postman Post all 6 invitations for the party.

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

Help Desk Get the Blade lobby desk clerk to help you bypass security.

Interagency Task Force Play through one entire mission with two other live players.

Spy vs. Spy In cooperative mode, prevent 10 attempts of picking up secret items.