Brainless
Die for the first time
Lost My Mind
Medic!
Complete Hospital on any difficulty
Ignored The Signals
Complete City on any difficulty
My Way Or The Highway
Complete Highway on any difficulty
Smelled The Fresh Air
Complete Countryside on any difficulty
Taken
Complete Crash Site on any difficulty
It Came From Earth...
Complete Planet on any difficulty
They Walked Into My Gun
Complete all Survival levels on Easy
Jerrycan
Complete all Survival levels on Medium
Hardened
Complete all Survival levels on Hard
Insane In The Membrain
Complete all Survival levels on Insane
Pistolero
Buy all Pistol upgrades in one game
Hunting Season
Buy all Shotgun upgrades in one game
Rain Of Bullets
Buy all Machine Gun upgrades in one game
Facemelter
Buy all Plasma Gun upgrades in one game
Science!
Buy all Laser Gun upgrades in one game
Had A Blast
Buy all Rocket Launcher upgrades in one game
No-Brainer
Reach 50x multiplier
All Together Now
Reach 100x multiplier
C-c-c-combo!
Reach 150x multiplier
Wipeout
Kill 1,000 aliens
Space Janitor
Kill 10,000 aliens
Total Annihilation
Kill 100,000 aliens
Splat!
Got Your Back
Kill an enemy close to a player with one health
Last Man Standing
Stay alive while other players are waiting to respawn
Because 1337 Is Too Mainstream
Kill 1338 Pink Crawlers
Randomized
Shoot 95471 times
Scrooge
Collect 25,000,000 coins in total (accumulative)
Not Giving In
Complete a co-op multiplayer game on Insane without dying
Semi-Pro Alienator
Complete three co-op multiplayer games on Insane without dying
Brainfest Has Been Cancelled
Complete six co-op multiplayer games on Insane without dying
Most Valuable Player
Get the highest score in a co-op multiplayer game
Unmissable
Get the highest score in a co-op multiplayer game ten times
Hoarder
Collect 250 pick-ups
In The Navy
Complete Navy on any difficulty
Heavy Metal
Complete Industrial on any difficulty
Home Sweet Home
Complete Suburbs on any difficulty
Scrapyard Challenged
Complete Scrapyard on any difficulty
Houston...
Complete Launch Pad on any difficulty
Unsinkable
Complete Ship on any difficulty
Saving The Day
Revive 50 people using Medkits
Loving My Bubble
Use the Shield 50 times
In The Spotlights
Use Beams 50 times
Tread Carefully
Place 150 Mines
Hold The Line
Place 50 Turrets
Wave Your Hands In The Air
Complete all Campaign levels on Easy
Why Would I Ever Stop Doing This?
Complete all Campaign levels on Medium
Stop... Hammer Time!
Complete all Campaign levels on Hard
Can't Touch This
Complete all Campaign levels on Insane
On Top Of The World
Complete Rooftops (Campaign) on any difficulty
Perioperative Mortality
Complete Clinic (Campaign) on any difficulty
Not Hogan's
Complete Alleys (Campaign) on any difficulty
Tunnel Vision
Complete Sewers (Campaign) on any difficulty
Winter Is Coming
Complete Riverside (Campaign) on any difficulty
Caved In
Complete Cave (Campaign) on any difficulty