Alright, this game is solid. It's essentially a shooter except you only get one bullet.
The gameplay was fine for the most part, movement feels a little stiff and platform movement was clunky. I was also not able to beat the final boss guy, no clue how to do that :/
The art is good, just a little repetetive, some tile randomness, maybe a parallax background and other stuff would be cool. Character animations for walking and jumping would also be rad!
The audio was a little out of place, I would've appreciated some music instead of the slightly unnerving background noise you've got going on.
That's about all I've got to say, decent game!