This was really fun! I had to try ta few times to make it to 250. Addictive game loop, and the powerups are all cool (explosive rounds is maybe a little OP, but in a fun way!). I would have maybe liked some kind of auditory/visual cue when I get an upgrade point, but other than that, no real notes from me. Very fun, and reminiscent (both in art and gameplay) of a lot of those addictive old-school flash games. Great work!