I had trouble for a while, then decided to make some potions. Kiss werewolf and Willow and used whetstone on my silver sword using strong attack and also used igni when I had endurance. Killed it in under two minutes, and that ended my screaming at my computer Lol.
Just fought him and he was pretty tough. Luckily I put a lot of stuff in endurance, aard and fire. Aaaah a bug! Kill it with fire! I should have used that potion to protect me from those things but instead I tried running around like a pussy and blasting it with fire all the time. That seemed to work as fighting head on, I felt the monster cheated by freezing geralt in place. <.<