Graphics are all mine (is what I do for a living XD).
Music is by Ozzed (I love his stuff), and soundFX are a mix and remix of the sound FXs you get when you buy C2.
I also used this for most of the laser fire sounds:
And then processing them again inside Audacity.
If you think stage 1-2 is hard, you need to check the bosses =P
Glad you like it!
I'll add keyboard controls in my next revision :)