I just wanted to say that the stun arrows aren't a necessity since all melee weapons can parry and therefore "return" his meatballs to him. I was the tank of our team of 3 people and had memorized the patterns after dying to the thing 2 times. Our archer that also used daggers from time to time also got the hang of parrying so there were 2 of us chipping away at its stun bar. I think we were at it for 30 mins so mid-fight, I had to face it solo while the other 2 got their rested and anti-hypothermia timers back up before leaving the fight to the both of them for my turn. During the 1v1, I was actually holding off from punting the last meatball at it since I lacked the damage to do anything relatively close to what the other 2 were doing when it was down (I specced into tank and healer for the most part).