Info and help:

Drawing:
1: moveTo cursor position
2: lineTo cursor position
3: build level (updates collision detection) obsolete!
4: debug dump to console

Moving player:
mouse-pointer: move cursor
w: activate thrusters
arrow-keys: jump in the pressed direction

Weapons:
mouse-click: fire weapon
q: cycle next Weapon
a: toogle auto-fire

Tab: close this box