Very beautiful and fun but... The game glitches for certain doors not allowing you to progress through the game such as bangshelter 2G which has the radioactivity suit which allows you to enter any radioactive area without taking damage over time... very game breaking when the door doesn't even open...
Edit: I also just learned some key swallower monsters don't spawn either such as the fluff hulk outside flibberdit not allowing you access to it's vault