I *just* beat the bugger. Once you know how to do it, he's shockingly easy.
Well, yeah.
During his first form, I just Square combo him when he knocks me into the air. If I land to close to him after the combo, I glide away real quickly from his land combo.
During his second form, I retreat from his combos and use Reflega on his orbs of darkness, and interrupt Heartless Angel.
Whenever he does his supersonic slash, use the blocking reaction command to block, then knock him into the air and do a combo, then retreat.
During his third form, repeat the second form's strategy and glide back and forth when he does the meteor shower attack.
Heal with Elixirs when necessary. But don't be a whimp with Curaga, especially if you don't need it. Save MP for Reflega, that's alot more important, Imo.
Beat him on Normal difficulty at level 61.
