Ahhh! 

Controls: Keyboard

1=left, 3=right, 0=fire, O=shield. 
joystick - none provided,  18 wawes + docking screen (after every 3 wawes). 
using shield costs fuel, watch out on laser temperature!

Tips: Each time you lose a life , fuel is replenished, and current wave of enemies is restarted, so it's a good idea to
save fuel, but not if it costs you a life.