Is this a good story opening? (GRAPHIC)?

I grabbed Arvax by the face,my whole hand dwarved his head, and using all my strength, crushed his skull, brain and skull cracked, squelched, splintered and burst under the pressure, i felt the warmth of his blood running down my wrist and forearm. His body twitch violently, and as I loosed my grip Arvax's body fell and slammed on the concrete floor, limp and lifeless as a rag doll. I examined my hand, i smiled at the sight of my blood stained skin, chunks of Arvax's brain were sliding off my fingers. Being an Arkia, I loved to kill.