Me last time, thanks for the old thread link zephyr!
Me this time in a dramatic recreation:
Biggest change was pulling and leveling a Little John with the full intent of getting him to 4/70 since I have a ton of shields, though I got Kelile to the final ascension tier which helped add some additional firepower. Grimm is slightly up in emblem tiers which didn’t hurt either, and I pulled a 4* mana troop this morning who immediately helped out compared to a level 8 Barbaric Minotaurs that I was using beforehand, though it is Gormek, so not by much, but every little bit helps.
Result. Surprisingly I didn’t need to blow the full arsenal, though I probably could’ve sustained less damage had I blew either an Axe or Bomb attack sooner. Oh well. Coulda/woulda/shoulda. Little John, who I thought wouldn’t really do much given he’s weak/neutral to most of the bosses and monsters actually helped a ton with his mana generation slowdown. Had everyone charged and ready to go before the final encounter, and I blew a gem. I was intending to blow the full arsenal, but found to my surprise that I didn’t need to. Poor Jack Sparrow died, but he’s 2/60, so not surprising:
I did alright. Probably should bring minor healing instead of regular healing since I’m running dangerously low on shrooms and use regular healing on a routine basis when fighting Titans, but I forgot.
I didn’t think so, but I guess I did!
Rogues are just banked and waiting for Kelile to hit 4/70 and nom them all. Barbarian will go to Grimm, but I didn’t have enough to push him up another node.
I was thinking Ares, but given that he’s level 79.5, about half of the trainer hero is going to go to waste, so probably Kelile then.
I’m just glad one of my weakest class trials is something I can viably do without carpet bombing now! 
Now I just need to buff up my Sorcerer/Rogue bench for Trial of Shadows, and I won’t need to blow the entire arsenal every time.