Took me a long time to figure out I had already won, the small text in the Corner really doesn't help.
Game started in widescreen, causing the top half of it to be completely cut off. Also took some Time to realize that.
Its cute, simple, but seemed to be bugfree. A bit annoying that you can't shoot while standing somewhere, causing you to have to jump when landing on an upgrade before you can take it. Also annoying that you clip back onto a platform when walking off the side and immediately reversing direction. Its fine for a normal sidescrolling jumping Game, but I don't think its needed here.