There's seriously just way too much going on in the finale level. I get that that's supposed to be the point, but it goes way too far, to the point where I don't even want to bother trying to solve it. The puzzle doesn't really seem to have much cohesion; instead of having a singular clear goal or a clear progression, there's multiple intermediate goals alongside multiple final goals alongside a clear need for backtracking at some point. Also, master key usage is unrestricted, which makes everything 100 times worse. It becomes impossible to tell if you made a mistake or just need to use a master key to reach the next area and then come back, and being unable to tell what moves are wrong or not means you can't really solve it with logic. It makes me feel like it would be easier to write a program to brute force it than to solve it normally, not that I want to do either.