Go for counters with Gough's Greatbow. Hitting them in the face while they swing with a giant bow with 40% increased counter damage hurts. In case you didn't know, bows do thrust damage with arrows. You can get over 1k damage with a counter headshot :P
Just be evasive, and if you have to use the dark hand to block/parry. Parry into a composite bow shot to the face. Or crossbow might be faster.