Great idea! It's like Lunar Lander, but with guns ^__^
I love the graphics, she looks completely awesome.
I too had a lot of trouble with the controls though, often I'd press rapidly and get no shots at all. I was playing on a keyboard though, and I think what might have happened here is you tested on dual stick controllers most of the time? There's definitely some work here to make it feel like a responsive, smooth game, but the concept is great, so I hope you keep at it!