The gameplay is a little janky, but the concept is pretty solid, and I like the inversion of the theme. I did find it weird that I had to face the enemies to hit them, but I got used to it. There are definitely some degenerate strategies that work too well, but I don't think that's necessarily a negative for this jam.
If there's one thing that doesn't hit the mark it's the pacing. I didn't realize there was a boss or shop; after about 14 waves it started to get tedious and I moved on.