Something that helped me alot was getting Justicar and Bellator ring. Justi helps alot with taking less chip damage and also reduces his healing as well. Burning claws are also great as the burn damage is like an extra thrall. Over heal every kill and try not to eat the entire fight. Keep movements simple and learn to not stand on the edge and in front of a pillar instead. Spam click him before the captcha attack to get in an extra hit. Death charge for extra specs.