Yuck, that sounds bad. I took a quick look at the bugs thread in the Steam forums, but it’s 13 pages long, and I didn’t stay long enough to find this particular issue. Which unit card was it? Does it apply to any unit with multi-strike and sweep?
I had my second consecutive win, this one on Convenant 2, playing as the Umbran primary and Stygian Guard secondary. I chose the Trample path all the way. My three key synergy cards were the champion, Prismal Dust, and Ember Cache. The Dust confers damage immunity per ember spent, and I added doublestack to it, and then cheapened its cost and removed consume. The Ember Cache pumps out embers and lets you draw new cards. So I’d pump up Prismal Dust with Ember, often getting 8 or 9 ember in a single turn, which meant 16 or 18 stacks of damage immunity on my trampling 150-damage hero. Better yet, these big stacks tended to appear most often toward the end of the round, when I needed them most. So my champ sat on the bottom row and would pound out 150x16 damage with damage immunity – enough to solo Seraph in the final battle, since I’d whittled her down a bit beforehand. A satisfying win with a good engine.