How do the four levers work?
  • 1 of 4: They have to do with opening and closing those huge wooden doors that separate the northern part of the keep from the rest of it.
  • 2 of 4: The two levers near the doors are covered up at first. You'll have to hit the other two (the ones in trapped Imp generator rooms) to uncover them.
  • 3 of 4: Then you can use the levers to cycle the huge wooden doors like an airlock.
  • 4 of 4: For instance, if you're south of them and want to go through, hit the nearby lever and run through the open doors before they close. The other doors will open, and you'll be in the northern section of the keep.