As it happens, Varric isn't quite fast enough to escape, but he's close - only a glancing blow. Kate's quick shot probably helps.

And then Felix is back on his feet, and what looks like half the ceiling is crashing down on the Dullahan's shoulders. The fragments disappear when they hit the floor, but the dents they leave in the armor don't.

Unfortunately, the Dullahan doesn't seem to like being hit under the arm. With a twist of its wrist, lightning springs along the blade of its sword. It then lashes out, straight at Kate. The shield's eyes light up briefly, sending a ring of tiny flames to circle her head for a moment.