I remembered it being a little challenging on my warlock, but when I rolled up to it on my wood elf ranger he and Shadowheart tore through them. I think I got a lot of lucky rolls as I never seemed to miss a shot with him and Shadowheart kept getting her Sacred Flame off to support. When they got close I swapped to my shortswords and laid into them. I did start the fight at max range of the shortbow, though, which helped immensely.
