Interesting game! I included it in my Time Jam compilation video series, if you’d like to take a look. :)

Wish I could kill the nymphs permanently because it would be very satisfying, but that would entirely remove the difficulty curve. Fun for a little bit, but I think if you were to build on this after the jam it would be worth your time to make the enemies not live forever somehow and then rework the difficulty balancing, and as turtletennis said have a win condition.

Pushing the nymphs off the top of the screen by spamming pebbles at them was quite fun, but I couldn't get past more than a couple of waves. It'd be nice if there were a win condition that is achievable. Good job on a solo game though.