Board Thread:Dark Souls/@comment-6132984-20130529163244/@comment-6132984-20130530063502

the dung pile will kill him but it takes about 20 mins for him to die andyou need to inflict toxic twice on him for him to die (bring about 20 dung piles just in case).

as long as you stay behind the pillers at the sides of the room and don't attack him with ranged or magic attacks he will just walk around until the toxic kills him.