could you look in to level 3, after you go down the second drop where you do the three platforms puzzle it feels impossible to go back up due to the lever being really far from the platform that moves up insanely fast and immediately after flipping the lever, moving the lever closer to the platform on a flat ground could fix this or adding a slight Delay on when the elevator goes back up.
That or I'm missing a piece of the puzzle to get back out of that part of the map.