Get your agility all the way up and run in circles around the lights before going to the next one. When you get to the top stand near the light until all weight of darkness gone the go stand on the plate until the light explodes then stand on the rock next to the light that exploded and shoot the ogre that spawns there should be two of them. When you get a message on screen then the bridge is done and you can run across. You do not have to stay on the plate to corn the bridge. You just have to stand there until it starts to form just takes a couple seconds to start Also use the skill that your melee turn you invisible. And make it where invisibility last longer as well as turning agility all the way up. This part is actually really easy. You should go to YouTube and watch some videos to get a better idea