Arrow Keys or WASD to move
Down or S to crouch
Hold down mouse button to fire, but don't let it overheat!
Space to run
Q to cool-down your weapon
E to target all bullets
F to burst fire
Shift to activate ghost ability for 3 seconds. 3 seconds cool-down afterward. Makes invincible to bullets.
Z to activate Air conditioning Mode for 5 seconds. 5 second cool-down afterward. Doubles your upper limit.