There is a rebellion on the planet Mars. Your job is simple. Kill all the impostors, free the hostages, and destroy the facilities. Good luck!
1: Shoot with the Mouse 2: Aim/Lock with the Mouse W-S-A-D: Walk Left Shift: Run Left Ctrl: Crouch X: Lie down Spacebar: Jump F: Use item R: Reload weapon H: Holster weapon G: Grenade V: Melee attack T: Slow motion