It was certainly not a first-time effort, and I tried to take as many precautions as I could.
I am still allowing myself just a bit of a brag, though.

Also, this was a character I already had saved, not one created to do this achivement.

The math is against me. If Tristian hadn't survived the initial strike (to provide flank) and without the attack bonus from the charge, it would have been 4 points/20% harder to confirm. I also used all my AC potions on the troll fight.

Maximum damage from these parameters is something like 96 points. Not too shabby.