Pretty cool!
Pretty hard from the get-go, but it's understandable in the context of a game jam (had the same problem tbh).
I loved the music, and the overall aesthetic, great job !
I got stuck at level 0 when my character somehow disappeared after respawning. Also, and this is completely a nitpick, but I was frustrated to not be able to crouch until level 5, haha. Just for my own enjoyment of the animation alone, it's a nice pastime for the easier levels.