An alien invasion has been detected. Aliens are coming in every direction and it’s up to you to defend your base with your artillery. Show no mercy!
Move: A and D or Left and Right, Jump: W or Up, Double Jump: W+W or Up+Up, Use Guns: E or X, Use Ammo Dispensers: E, X or Space, Reload Level: L, Shoot: Space or LMB, Pause: P