Nice clean and functional look, but the tank controls felt pretty imprecise - I spent much of my time just fiddling with the view angle to get a clean shot. It's a really nice base, I hope that you also have some sort of a gimmick thought out to separate this from other wave based shooters.

This was cool, I adapted to the controls a lot quicker than I thought. Ice gun is OP - for waves 2 to 8 I stood in one spot and was able to take out everything without moving, which was strangely satisfying. Seems like a solid foundation, I'd be interested to see where you go with this.