Last time I had bad luck or bad items and had to pay the continue. But that’s one of my favourite trials 
How I did last time:
This time I took out Boldie for Anzogh and Colen for Hu Tao. I think, a yellow hero is better for the 2 purple bosses.
And that was true, no problems at all. Of course, I used many minor healings, some antidotes and some mana, but no carpet bombing and no continue needed And of course, another 5* red instead of underleveled Colen and Sartana maxed made a huge difference.
Trainer hero goes to…ehh what was his name…Jabbar.
Emblems are stocked, Boldie at 7 and Hu Tao at 4 is okay for the moment and Wizard…uhh I wanted Sartana’s first node, but I still need 18 emblems for that, hmpf -.- when I lose patience, Proteus will get them first 
no I want at least the first node on every maxed hero.