Yup, and a good reason to have a bard tag along. Their ironskin chant makes a lot of difference.
By the way, I originally had my doubts about the "only die if everyone dies" mechanic, but it's actually kinda exciting. I had a pretty tense gameplay stretch when I stumbled into a bunch of orcs in a dungeon, got overwhelmed, and then got split up, with most of my party unconscious in different parts of the dungeon. It was quite exciting to sneak and fight my way through that, even more so because I hadn't saved for a quite a while. ;-)
Again, I find ambushes work great for these tough mob battles. Set up in a room with your tank at the door, the rogue hidden to the side, and your spellcaster(s) in the background. Then send in someone to lure them into the ambush. Usually you can get two fireballs in before they enter melee, which will have weakened them severely. Things just get tricky if the game spawns enemies behind you as it sometimes does. (IMO that's cheating; there are better ways to set up tactical challenges if you ask me.)