The exit key room is found at the end of Monster 5's maze. The room is small and contains one note about Spooky's past and the exit key in the first playthrough of the game. Additionally, through the darkened glass window, the Demon Child can be seen.
In New Game +, it is possible to encounter a different instance of the room if the player gets the Sword and kills all enemies (apart from Monster 6, who cannot be killed). In this instance, the Demon Child has a different reaction to the player and a new note talking about Spooky's origin can be found instead of the original note.
There's a side room in the hallway where Monster 1 is found. In this room, there is a bed in the middle of the room with blood flowing from the bed to the ceiling. Screams of a man can also be heard when the player is close to the bed.
The Morgue rooms each hold several body bags, with one of them containing the badge and the other containing the acid bottle. Once the player retrieves the badge and then exits, they will enter a room with body bags scattered around. Monster 2 will then start chasing the player.
Monster 6's Corridor
A long corridor that can be found in the "nightmare" basement area. If the player walks down the hallway for a long period of time, Monster 6 will appear in the distance. If they keep walking, Monster 6 will jumpscare the player, killing them.
The stairs are hidden behind the bookcase in the Officer's Room. While going down the stairs, the player can hear creepy groans following them, with some random organs seen around the stairs if looking down. Before reaching the end, the player can see blood on the walls.
The Basement is, seemingly, the last area in the game (not counting the Isolation Room). A key to the Isolation Room can be found there. After the key to the Isolation Room is retrieved, Monster 4 will start to chase the player. Monster 3 occasionally appears in the rooms there, when Monster 4 isn't chasing the player.
An area that was added in the July 4th, 2016 update. It seems to continue endlessly. If the player enters one of the side rooms, they will emerge from a different section of the hallway from where they first entered the room.
Warning: Very loud!
- The screams heard in the blood bed room were done by Matt McMuscles from the YouTube channel Two Best Friends.