Very fun game! I really liked the artwork and the enemy design.
Two small nitpicks:
1. Around 15 loops in I got stuck at the bottom position while the sticky enemy grew to the size of the screen with particles everywhere, killing the framerate and my run, but maybe I did something weird to make that happen :P
2. The burst of spawns every loop is pretty easy to avoid if you wait a second or two, maybe in increase in spawn rate (for a certain time maybe) would increase the difficulty a bit more
Overall really solid game! I enjoyed it a lot! :)