Nice game! Good to see someone else that used Bevy too :)
I think building a noita-style spell system as you level up is a super engaging way to play through a survivors game. The modifiers/spell system definitely is a little unbalanced, but that's half the fun with this kind of game.
Issues I encountered: Audio doesn't handle the many projectiles well, game slowed down a bit after I had a few spell components (maybe the homing was checking every enemy per projectile every frame?), and crashed at level 13.