In the area before you get into Tronjheim, after you meet Murtagh in the desert, you can save at a Dragon Head. You can either go to the Urgals or to the Dragon Tower. If you see an Urgal you're going the wrong way. Go the other way and you'll be in the desert but no Urgals, the Tower. There are puzzles and ghosts in there. The puzzles are easy, the ghosts are tricky. in the Electricity Room, you must Harden them and then use Electric Blast. In the Harden room you have to Harden a ghost on the switch and make a run for the door. Then at the top you learn Dark Mist, where you can use hard moves and the Urgals won't see you. This is reccommended by the waterfall where Kull are coming out.