frenzy, balthazar's aura, dismember, axe twist, penetrating blow, executioner's strike, healing breeze, life attunement.
realized quick that the mirror uses a sword close up, so why give him any skills for that? had an axe and thought that'll work.
fight started i casted balthazar's aura as soon as next to it, and attacked. by the time i was able to use the first axe skill, the fight was over.
11 healing/9 smiting/10 axe.
got it on my 4th try.