Caretaker (boss fight) - The Witcher 3 (GotY Edition) - Hearts of Stone (DLC)

This is Geralt's battle against a special caretaker. This is done on the "blood and broken bones" difficulty. I really hated this fight. This is my first go at it and it took me a while to get this fight. He regenerates health with every hit he lands and he can also summon shadow creatures and kill them, which regains him health, too. He just sucks. So hit him hard and don't let him hit you. Easy, right?