Arrow/WASD keys - Move.
Mouse - Aim & Shoot.
Up/Q/E - Enter Base.
Space = Hold to Repai.r Base (from outside)
Kill all of the ZomBears that approach to clear an area! Hiding out in the base will replenish your health, provide cover, and keep your gun from overheating.
Tip: Pick up the random boxes. They contain weapons, gun turrets, and other surprises!