I really like this. It's an interesting take on the theme. My only issue is that the game doesn't seem to get more difficult as it progresses (but that's a very small issue). Good work!
we mainly went with a, how long can you survive kind of concept. and just get as many points as possible. I beleive there is a difficulty increaser (not 100%, I'm just the artist), so many ramping that up a bit more could be a solid improvment
