Yeah, I can imagine that a 3D game in 4 days (depending on team size) can be pretty hard to put together. Especially since sound design isn't necessarily something you think about from the start of development. The overall idea of involving some eldritch being/the doctor being part of a cult was nice, but the length of the game didn't give the mind enough time to come up with any horrible scenarios of what could be. If I remember right Amnesia: The Dark Descent triggered such sequences by short moments where the game would go into slow motion (with slight tunnel vision?), while sound effects would play as if the torture instrument was being used, when interacting with it for the first time.
Good luck with updating :D
Of course, Amnesia was a big influence in a few regards, but again, most of the ideas it brought weren't really doable alongside the rest of it in just 4 days (and the team consist of just me too), but now I've got all the time in the world for updates, and a lot of cut/intended content should make their way back in :)