Wow, that was really challenging. At one point, I kept progressing but forgot the key behind so I had to undo a lot to go back and get it. I kept wondering for a long time if all the doors except one were for misdirection but they turned out to really useful for exploration (followed by a long stream of undo bcz I still need dat key). Overall, this is one of the best puzzle games I've played and solving each part felt very rewarding. Amazing work.