Oh sorry, I think I have miscommunicated on how to replicate it. So, I've played normal mode for a while, got to mid part of the game, and then got back to main menu and played the masochist mode. When I got to the first rooms, they were already clear, and then got further than I was before and the subsequent rooms were clear as well. I got to the end and got the sanity message, but little does the game know I cheated my own sanity xD