Kind of surprised people are having that much trouble with this one. Not saying “git gud” or anything, I just found many other encounters harder.

OK, first time i blundered into it after crossing the shadow lands without resting. Immediately reloaded that. But apart from that, both times I split a couple of characters off Marcus and Isobel to stop the winged jerks killing my mates in the tavern. Maybe that actually made it easier? Or maybe I just got lucky with rolls?