Kyle points to a door that looks to have been cut out of the wallpaper.
(Since they met again in the werewolf room, they'd need to go through a couple rooms to reach the new door, which include things to notice.
I've updated the map.)
Armach followed Kyle through a couple rooms until Kyle indicated an unopened door. In the first room they passed into seemed like it had been the site of similar horror; judging from the smell and the stains on the floor, it had once had pools of blood and piles of excrement, but it seemed someone had made a serious effort to clean it up. Piled in one corner were the bodies of four child-like monsters: the whole scene may have reminded him of Binding of Isaac. The room had four doorways leading from it (including the one he'd just passed through). One looked like it led back to the room with the pods where he'd first arrived.
They took a different door, leading into a room filled with several racks of liquor bottles, and a dead oni lying in a large pool of dried blood. There seemed to be another door on the other end (which Armach may have heard faint voices coming from, but perhaps they went through too fast for him to notice), but rather they went through another door, which looked as if it may have been hidden until recently.
That led into another storage-looking room, with crates and more shelves with drink bottles. Near the entrance lay 3 dead rats, very recent judging by the fact that 2 of them were still bleeding from the head area (the third had no apparent cuts). It was here that Kyle pointed out the unopened door.
(Armach, since you've opened a door, you get to describe the room beyond, and the challenge within. Unless you'd rather someone else did it)