umm i didnt read previous posts but i do know you can go in kill all the regular bombs and then run back out and cure yourself with the crystal and go back in and the regular bombs will be gone. then go in attack with all your might and when his life is half way down hit him with a quickening if he uses renew, jsut remember he can only use it a certain number of times. for me it was 3 times i dont know if its the same with everyone? i was in my mid 30s when i beat him.