Hey, thanks for playing!
The sprite actually does show the ranges, as collection range is the edge of the sprite and the tiny dot in the middle is your hitbox for taking damage. I guess it could be made more clear, though? It wasn't something I felt I could prioritize in the time span of the jam.
I admit my art is crap lol. I'm not an artist and just had to make something quick to get back to the gameplay. The only thing I put real time into the art was probably boss 3. I even reused one of the enemy sprites like 5 times for slightly different variations and purposes.
I'll see if I can balance audio better in the future. I have my audio settings weird on my machine so it's hard to calibrate against other things sometimes.