So, yesterday, I had fun trying to defend a region on a quest. The quest said it was Nightmare.
My barracks were just upgraded to level 16 and my troops usually handle Nightmare with relative ease, so long as I don't do anything too stupid.
The quest, though, was for region 23, which only allows Insane and above for solo. So, I'm reasonably confident that I was fighting Insane, because I was losing and usually losing hard no matter how well I fought.
I could take out all the arti and many/most archers while having several other units chasing my cavs, yet, still have all my units killed. I could execute a trap where I flanked most of the enemy heavies and there enemy heavies would still carve my heavies and others.
It was fun trying, but I thought I should let you know about the bug.
mgotte