Nice! I ha one bug: no one spawns afte 1:40 in the third stage (purple ground). Didi you use AI to make the Game Boy cover?
Hey to complete this stage you just need to scare away boss kid, not sure I have seen the glitch but I play tested on analog pocket and a Gameboy color. I found a Gameboy box cover template, used AI for the background and the ghost was my own.
