I almost not to try final stage,… because my new Kiril is 3.32, Merlin 3.60 and Anzogh 2.60, trouble which should I ascend 1st. Merlin VS (Sabina & Seshat), and Anzogh VS (Marjana & Scarlett).
And also my forge still underconstruction, just like always… lol. So no bomb.
But after seing the opponent bosses, I decide to try stage 3, and the results… drumb bell please 
Using this hereos… and some items.
Use only 1 minor heal and 1 axes before enter bosses.
Anzogh, Kiril and Merlin died.
finally… finish this 1st Trial of Decimation… done!
Emblem keep for proteus and boldtusk. Trainer keep for Merlin, Sabina or Seshat, later on.