Awesome run dude! I notice most people just do RT, RT, RT but what I do is RB, RT, RT, RT. It gives you an extra 7000 damage on him and its easy to do as you run at him. You dropped his health to the T in crota with three drops and the way I do it I drop his health to about the same in two drops. I also do one super on the second drop but ya just a little advice to everyone out there. Your way works great but teams I'm with are never able to drop him three times before the sword goes away.