Very impressive
The coding on this game is really good, no bugs that I noticed, and no noticeable lag (I know cuz I'm working on a platform game right now). I loved the upgrade system, especially how her weapons and outfit actually change as she improves.
My only beefs are that she takes up a lot of the screen, so I got disoriented falling and jumping cuz I couldn't see far enough around me. (I'd also like to see a parallaxing 2nd BG in front of the static bg so I know when I'm moving on a large platform). The BGs overall could have had more effort...ie: more texture, shading etc.
Overall...top notch work.