I loved this. It's a really well-made game, especially for a jam! It felt fluid to play, and while the graphics seemed a little messy at times, (That's to be expected when working at such a low resolution!) I think overall it looked really nice too. The concept was good, and definitely a great idea for a solo jam project.
The only real complaint I have is that the enemies don't react visually to hitting them, (Flashing red or something similar.) So it's hard to really tell that my hit did anything at first. But after I found that out, the game made a lot more sense!