I may have found a possible bug: in the mine area of the pyramid section, I got too many ghosts in Leah in the area of the mine where the spirits go when they are used to pass passages and now the screen is black, I can still interact with things in the environment if I try hard enough but I cannot see anything, I may keep making the mistake of not having multiple save which would help but this is a bug, you get too many ghosts in Leah's belly then bam, you get stuck in a black screen, you can enter the menu, the game is still (somewhat) playable but no matter how temporary, still a bug.