Unlock 150 Dog Tag displays

Single Player: Stealth kill 25 enemies

Create your first custom class

Multiplayer: Finish top of the Scoreboard

Finish the single player campaign on any difficulty

Locate Jacob Hargreave

Defend Central Station

Reach the Hargreave-Rasch building

Kill 10 enemies with grab and throw

Throw an alien down the sinkhole in Dark Heart

Find Nathan Gould

Single Player: Kill 4 enemies in a row with headshots

Complete In at the Deep End