(HTG) Brian quickly shows you how to complete God of War Ghost of Sparta Athena Challenge of the Gods 8. Bone Crusher requires you to Kill 10 cursed remains with Grab ( circle button ). I found the easiest way was to soften them up by your weapon of choice, but to finish the enemy by using a grab move. I simply spammed circle button once I slapped them around a bit. Hope this helps you complete God of War Ghost of Sparta Athena Challenge of the Gods 8.