In summary, she’s a twelve year old who died during Halloween, she’s trapped (or idk if yes or no) in a mansion that has a lot of different monsters (called specimens), you have to go through 1000 rooms without dying. There are two endings, first, the good ending where you and the final boss get crushed by the ceiling and you, well die. But you turn into a ghost like spooky and she says that she has the most feared army in the world (say that to the US), and the game cuts saying “did you thought this was the end?” And the game ends.
In the other ending which is the bad one, it happens if you kill every single enemy in the final boss fight and if you keep hitting the boss with the axe, you get to see spooky again, but she seem ““““proud”””” of you and then she mentions how you have basically become one more specimen, plus you get a picture of yourself holding the axe and blood over the place.
There are two dlc with two different endings, a hospital and a “dollhouse”, at the end of the hospital, the good ending you find a note and Spooky’s silhouette behind a window and she seems sad, in the bad ending (which I have no idea how to get), you get to the same room and you again find spooky and the note, but this time. Spooky is scared of you (or idk). At the end of both endings you just get out of the hospital.
The Dollhouse has two endings, good ending that idk how to get is that ghosts escape the mansion (including spooky p) and she reunites with her parents, in the bad ending the mansion falls apart and some “he’ll hate” breaks and every single spirit escapes, so in summary a prequel to doom.