I had 2 Veteran Risen Abominations in my personal story that ran at 3x my speed, and used a large AOE stomp every 3 seconds. The only way I was able to beat them was by bugging out the game.
Please let me know if this is how you want me to play the game. By bugging out mobs on terrain and stairs, because otherwise it is impossible to beat them
Or you know you can actually design things well.