Graven will generally walk toward Conan. Due to the really lousy camera, try to keep Graven in the middle of the arena, so he stays in view. He has a main 3-hit quick combo and a shorter heavy attack.

Fight across more parapets and down a ramp leading back to the ground level. Open another gate with the same displayed button sequence junk. Kill the waves of henchmen who will enter the arena. As ...