Did you end up beating the game? If so how did you do it?
I did. I usually attacked willpower first, then strength or agility, then back to willpower again so it'd break. Next I'd go for taming, then pick continue trying to break another stat. Just make sure you dodge as much as possible during the enemy's attack phase and try to score at least 23+ points during the mouse spinning phase. It was extremely difficult and took numerous tries, but it is indeed possible.