Yep...Currently battling the sorrow but i have no ideia how to beat him...I've tried every single item, and even the "psycho-mantis" trick by switching controllers...but i don't get anywhere. I don't know if is possible to get his camo or even how to kill him! But i think he is an excellent character.

Please, if you comment here and know how to beat him, DO NOT TELL ME. I hate spoilers and want to find by myself...ok?