He is to op there is no counter char to him he hits one time and you loose half hp and just keep charging then fight is done correct me if iam wrong but if he looses hp he buffs himself but all other char are on cool down with hp pots and can't buff themselves when hp is low and are just running from him at that point
silence the berserk and he is dead also .. his attack is linear ,, u can avoid his hit by turn around or side ..it is hard to explain u need to play with berserk to understand what iam saying .. hope this help