"This video contains spoilers!

I was so excited when I saw this mysterious figure in the launch trailer for the first time. But sadly, before I reached this part in the game, I already saw his face and knew his name.
I heard many people said this is definitely the hardest boss fight in the world of witcher. Well, I doubt it, because his melee tricks are easy to avoid. The only difficulty is his vitality regeneration by his summoned deads. Try to kill as many as you can before they reach their master. Difficulty was Death March."