The Bridge Is mine – Extreme
Not unlocked yetComplete The Bridge is Mine in extreme mode
The Shepherd – Extreme
Not unlocked yetComplete The Shepherd in extreme mode
Fully Loaded
Not unlocked yetResearch all Items
Bang Bang
Not unlocked yetResearch all Physical Weapons
Gas Gas
Not unlocked yetResearch all Biological Weapons
Zap Zap
Not unlocked yetResearch all Energy Weapons
Whiz Bang
Not unlocked yetResearch all Field Effect Weapons
Mind Control
Not unlocked yetResearch all Field Effects
Competitive
Not unlocked yetPut your account online
Mesmer
Not unlocked yetTake over a walker
Lazarus
Not unlocked yetResurrect a hero
Collector
Not unlocked yetCollect all pickups
Collateral
Not unlocked yetDestroy the Genetics plant in 'Unfinished Business' and exit with the engineer.
Takes One To Kill One
Not unlocked yetKill a Walker with another Walker
Fodder
Not unlocked yetKill 200 grunts in a single mission
Bulletproof
Not unlocked yetKill 100 enemies without losing a man
Deadly
Not unlocked yetKill 10 enemies in 5 seconds
Unstoppable
Not unlocked yetKill 25 enemies in 5 seconds
Librarian
Not unlocked yetCollect all Data-cores
Choked
Not unlocked yetKill 200 enemies using the Tactical Plague Gun