Sadly, like some others, I didn't get through the glowing levers puzzle - I tried going in the direction of where the glowing lever was in each room, which seemed to make progress, till I hit a dark room where I have no idea what to do? Following the light like I did before just seems to reset the puzzle, activating the levers in the final room in the order they were lit in previously didn't help either… no ideas.
Some subtle instructions or signs of progress would surely help.