Originally, it was inspired by Spooky’s Jump Scare Mansion and this is also (kind of) the case with the big wall monster. It was both inspired by Spooky’s specimen 7 and a nightmare I had that I wrote down in a dream diary I have (which is also the inspiration for the monster that spawns in the pitch black darkness).
(it’s also because I couldn’t rig anything or model anything decent during the time I was working on this for college but let’s ignore that haha)
I will definitely add some hints that players can read on how to survive monsters (like another commenter suggested, notes in the environment). Thanks!