I died on my first Honour Mode run, after 61 hours, to Oliver.
I normally play games blind, so everything I discover, I try and find on my own.
I did NOT look up the new legendary actions, and it absolutely cost me this run.
What happened was, Oliver has a
Legendary Action called
"The Wasting Quiet (Condition)". My Tav and Shadowheart had two rings of the Wasting Quiet surrounding them. What this condition does, is it completely
silences characters standing within the ring, AND does
3-24 necrotic damage every time they start or enter their turn inside the aura. This means that I could not misty step, or use any magic features to move myself out of the aura.
Had I looked this up beforehand, I would have absolutely drank necrotic resistance potions, disengaged both characters, and had them walk outside the ring. However, I wasn't metagaming and these characters don't know what this ability is, and neither did I. I let them stay in the ring, and that's when everything went downhill. Both characters got surrounded by Oliver's clones, at the beginning of their turn, both characters were downed. Halsin was already in Owlbear form, and was taking care of the shadow wraiths, however because he was transformed, he was unable to throw a healing potion at my downed characters. Even if he had, they would have started their turn inside the aura, and they would have died anyways. I had Gale use a revival scroll, and resurrect a character outside of the aura, but the resurrected character only had 1HP, which was immediately killed off by all the shadow Olivers running around.
I'm not even sad about the run coming to an end, Oliver got me fair and square. I'm glad knowing I died because it was my own fault. Better this than a game-ending bug

I have to admit, this run forced me to do so many things I never would have otherwised considered. I found that I absolutely love Shadowheart as a Life Domain cleric. I stacked so much healing equipment on her, even "5 HP heals" became "25HP heals." In balanced and tactician, things like Sanctuary or Death Ward, I didn't use; on Honour mode, these skills could mean the difference between winning or losing. Had a blast on this run, but I feel really sad losing my character, I was rather attached to her TT^TT