Really fun game, the concept is very simple but engaging, I wanted to keep playing just so I could see all of the different effects that could happen. Perfectly polished and executed within the time, well done! I have a few things I'd suggest adding if you did a post-jam version:
Different enemy types to change things up a bit as the waves go on (if this is already a thing I apologise, I was too bad to make it very far).
When you die it's a little annoying to have to play the first wave with no effect again, maybe change it so once the player has played it once, the effects start right away?
Would be cool if eventually multiple effects start getting applied at once to make things more challenging.