Well, apparently if you press the down button on the joystick, you get into some sort of debug mode, where you can fly and go through walls really fast. It seems to be a function of the game itself, so technically not cheating (?). A legit Any% category could be done separately tho.

As for the run itself, it was a bit improvised so it could be a lot better using this function. Especially the end where I tried to get in the wrong floor (Also I don't think pulling the final lever was really necessary). I was using a PS3 Controller btw. Oh, and yeah the game crashed after the credits.