Berserkers can be found at Skellige and Vidkaarl's Village.
They are weak against Cursed Oil, Quen, Igni.
Skellige legends speak of men known as berserkers who transform into bears when overwhelmed by battle rage. In doing so, they lose all self-awareness and are driven by a boodlust which they must satiate in order to return to human form. Few believe these blood-curdling tales, however, not even in Skellige, where the inhabitants usually treat even the least probable legends with the utmost gravity. This indicates either that berserkers are in fact mere figments of mead-sodden imaginations,or else that they have learned to hide their abilities from the rest of the islanders