he just takes a long time to grind down. patience is the key, a lot of his attacks/movements gives you some space to use items more liberally.
I used nightjar slash to close the distance that he loves making. Also hit him in the head, stuns him after a few hits. I tried to keep to his right as its easier to get in and get hits after his combos.
I saved malcontent for phase three.
I will say, actually beating the boss was bittersweet. Is this what wolf is destined for? To be consumed by bloodshed and trauma. Istg almost shed a tear when you hear "finish me wolf..."
Kinda makes ya feel bad when a good chunk of people just cheese this boss (i aint gonna lie, i beat him in reflection of strength then cheesed it, im not that much of a masochist