1 star for your attempt. The music isn't yours (nor did you cite where you got it.) Your sprites were alright I guess but the collision detection was pretty bad. Better luck next time.
Well lets see.
The art is pretty good, although at times it looked like you just cropped some non-transparent images.
The programming is okay. And why i say ok is that i could only shoot and move down on Level 1. The rest of the levels are fine.
The story is pretty decent, no comment about it.
Level 1, i already listed it as being glitched.
Level 2 is pretty good, it's fine.
Level 3 IS TOO DAMN HARD.
In short, this game needs a little fixing. It's still good though. 3/5.