[Bungleau]

I usually kill Cormorack with bows, and perhaps the wand. Near the entrance of the cave, there's a little opening where you can hide, wait for everyone to turn green, and then slide out sideways to strafe him. He'll breathe, but it will go where you were, and you can then strafe back. Takes a while, but you can take him out.

Just be careful not to strafe down to the step below the entrance. Then you can't strafe back, and you're going to be toast.

I find this to take much less time than running in circles and timing breathing patterns.