Control
Change your formation from the Team Management tile in Squad during your Career
1/17/2008
3:20:38 AM
Rare 12.5%
Austin Overpowered
Complete Twin Rocks, Pike's Basin, and Gaptooth Breach Hideouts in Single Player.
1/16/2008
4:33:25 AM
Rare 10.3%
Sacrificial Lamb
Shoot at or be shot by an ally with a Pack-a-Punch crossbow and kill six zombies with the explosion.
1/11/2008
9:37:51 AM
Ultra Rare 0.8%
Playing with Power
In Origins, build all elemental staffs in one game.
1/8/2008
9:58:35 PM
Ultra Rare 3.4%