What video game "engine" was used to make this?

How to get achievment "House Has Eye"? please tell me

i watched a streamer play this and i noticed a few subtle references to different crafts from the vodou saint Baron Samedi's hat on the hat rack, the stick pentacles hanging everywhere for protection. the Ouija board. I was wondering what was the moose/elk linked too as that's one connection i couldn't quite find or remember? does anyone know what Myth, Legend or tale that is linked too....

By any chance would be possible to have the soundtrack?

does this game support controller?