La Capitan ve Chrono Ranger, Blood Mage Lifeline and Collector Guise in Magmaria.
Good luck, heroes.
This was surprisingly easy! I think I had to kill the boat all of twice, and I always had enough environment and ongoing destruction to avoid the worst stuff. Maybe various Ley-Line Shifts helped? Swapping Lifeline back and forth between his variants was really great for overall performance.
Easy Mint here, final HP 17/16/13. Spread out the damage to make sure Mabel dropped and the boat was in trouble going into the environment turn, and I was rewarded for it. Never saw the boat again and we pounded La Capitan into the dirt over the next four rounds. Lifeline couldn't use powers twice, but that didn't seem too awful since I had Terminarch's Casing and Cosmic Immolation out for 4 end of turn damage anyway.
Sub-optimal play got me a mint with heroes at 7/5/0. When Guise went down and there were a lot of crew members out, Chrono-Ranger threw down Hunter & Hunted for the win.
Replay was better, 13/8/13.
What Bolnerap said. I only managed 15 14 8 but that's because of a few minor misplays on my part.