I reached wave 16 at best so far.
Very good implementation of the theme, it really makes you play the game in a different way than another game, I specially like how much it punishes you for missing an enemy. The game controls well, there are not tons of different enemies but the ones which are there works totally differently at least, triggering some cool visual effects in the process. The result is cool arcade-ish gameplay loop, with the right difficulty.
Cool and unique game, thanks for sharing.