Grim Dawn AoM - Canister Bomb + Drain Essence Defiler

Quick vid of my Defiler in Ultimate Steps of Torment. He has roughly 95% Vitality to Fire conversion. I got taken out by Alkamos when he had a sneeze of health left (hell, damn, fart!!). Found it hard to keep my health up with this build. A few core items still missing but I foresee getting him to maybe 12,000/13,000 if and when I find these items. Drain Essence seems to be terrible damage source, I may get rid of it after all. The idea was to make a “Burn“ focused build but with the current setup that's