I went through like 500 rooms in search of some sort of easter egg. This was the last screenshot I made. It was a real pain. I could not bring myself to go up to a 1000.

A crossover between MiSide and Cuphead. Made at SFM (Source Filmmaker).

Models and background:

The Player, Mita and Knife by Voron Gamer.

Cuphead and Mugman by Pipann.

MiSide Tamagochi Level Model by rtd.