In the map of Granny's house, there is a trick to climb to the roof of the storage in the backyard, and from there you can jump to the edge of the walls and go to inaccessible places of the map.

for this, you must go to the backyard, jump on the roof of the well, and there you must propel yourself with the top of the roof, to jump while pressing shift to run, until you get to the top of the guillotine, and from there jump to the storage room holding shift to run and try to get to the roof. and there you can jump to the edges of the walls, and you can enter areas if you can advance without falling, or stagnate, which is very common while doing this. i could access the area of the ending of the car lol.