Wow, I’m a little jittery after that clear, but I did it! I think it was my fifth or sixth shot.
My team:
The final minute of play:
To narrate the prior 16 minutes…
I cleared the first two rounds without trouble. The only issue I ran into was the final monster on the second round. I had everyone charged and my board set to go with a blue diamond, I could make a blue diamond by moving the blue diamond, and I had 14 blue tiles (i.e. 40% of the screen). But I had no way to kill the monster. So I burned Valen’s special.
Once on the bosses, I fired Triton at Lady then fired the blue diamond to make a new blue diamond. After that, I hit Lady with Valen and Triton. At that point, I fired the newly created blue diamond which sent five tiles up, which was perfect. I used two mana pots to top off Triton and then hit Lady again. Eight more pots and two more tridents got me within striking range. From there, I nuked with four axes and five bombs, and finished her off with some purple tiles. Shortly after that is where the video picks up.
What was I thinking? Well, thank you thank you thank you to the wonderful @Mariamne, I knew that there were no blue monsters in the first two rounds. I discovered that my tile damage against Arthur was pretty pathetic, so I could throw up blue tiles without any fear of retribution. My only 4* snipers are Triton and Sonya, and I knew I needed to be able to throw up damage fast. I raid with this team, except I usually have Sonya in Kashhrek’s spot. So I started doing some math, and I made a guess that I could do more damage with a Valen+Triton combo than I was doing with arrows. So I swapped in mana pots for arrows. I used Kashhrek because I knew I needed help keeping everyone alive, because with this lineup, riposte was going to be my only hope of bringing down Arthur. So Sonya stayed home. I got very close on a previous run, so I knew I’d need some luck, and this time through I got just enough.
P.S. Even though mysterious chests take no damage when shielded, they still reflect full damage!