Well, first off, I must say that this is a terrifying enemy to face. You've done well, I'd say.
I think Piercing Agony might do a bit too much damage; It can, assuming level 1 stats, one-shot most all of the supports/assassins/specialists. Sure, it would scale slower, but it's still a bit high. Some other tuning might be needed here & there, but it looks good to me besides that.
However, I do think I've found a talent build I'd usually take:
Pleasure in Pain, Abundant Anquish,...
Posted: Aug 13, 2016