This is a really interesting concept and was pretty fun to play. The art style is also really good. Only complaint is the "real challenge" in the tutorial lagged the game horrifically for the browser build.
Viewing post in Chroma Slayer jam comments
I was able to skip during the lag and play the game on my first playthrough, but not the second (got stuck in the laggy part), so definitely good to deal with the bug. I just tested it now and it definitely looks like you've fixed the bug. No more extreme lag with the entire screen filled with enemies.