Die at the door next to the hell room then in the corner at the back next to the hell room there is a chip in the outfacing corner of the wall next to the ruble , jump and crouch into it and you shoul be sitting on the chip

in shi no numa
die next to the window next to the stairs then when you come back go crawl or jump and crouch into the corner infront of the window you died at next to the sandy rubly bit near the wooden bit (that is a door you can open)