Loved it! The idea of having the enemies chasing the player directly definitely made it a lot more active than other tower-defense games I've played. My only criticism is that it's fairly easy to cheese the earlier waves just by leading them through well-timed bombs. I'd also like it if doing damage or being hurt were telegraphed more - the sort of "oof" sound effect and the clicks made sense, but it would've been a lot nicer if maybe there was a bit of flashing or screen shake when the player was hit.