For sure, one of my hardest battles was against dogs. I hate that scaling. To be honest though, it does seem like the game is hardest when you're a low level, fresh after the battle of Ostagar is over. Later levels you do feel more powerful. Revenants are pretty nasty too. You can force field them for a decent duration, as you kill their minions first. If you have that telekinetic weapon spell, use that. What makes those guys so nasty is that it takes swipes that hurt everyone within swing's distance. I haven't tried ranged tactics, but that would definitely work. Especially if you can keep out of range of his aura. He'll always be chasing someone, and he'll force pull you all. But if you run away while using ranged attacks, I could see that as working.