The game is really good. Love the art, music and style. The pacing stresses me out, though, and not in a good way. At first I didn't understand why my shots were stopping since in the instructions it said "hold left mouse button". The very fast shots and long time waiting between recharging is a real turn down. I think having slower shots would help with that. Maybe less time between chargin also, so the player isn't idle for as long.
I also really like that you gave the option of moving with mouse or keyboard (: