Actually, i beat him at my first go. Helps to train with Level 100 chaos in quick battle, at maximum AI, until you get a feeling for his moves and how to block/dodge them.
His bravery attacks are pretty much trial and error, but for his HP moves here goes my strategy:
Divine Judgment - Wait until the pillars of light are almost alligned with your character and the dodge to the side, and that's important, because if you dodge to the front or to the back, you'll get hit (this move is one of the most punishable of them all, since if you dodge the pillars, he will be stuck in the sword throwing animation, you can counter easily with and hp or combo BRV ---> HP attack)
Demon's Dance - This move is a tricky one, and it causes a lot of damage, since it's a five stage BRV and a final HP attack. His first attack is easily dodgeable when he begins the animation for the attack, and his subsequent attacks are visible when he begins to teleport around to hit you. You have to wait until the brown mist of his teleportation appears and then dodge to the side once again, Don't counter attack this move afterwards because he will Reflex block almost 100% of the times.
Shatter Rain - He only tends to use this move when you're way above him, this move is undodgeable, because he hurls tons of flaming rocks in your direction. The only way to stop him is to rush him really fast when the attack is named, and combo him (if you're using an BRV---> HP combo move, because those moves gain high priority) or use a fast HP movement
Utter Chaos - The big badass move where he transforms into a giant version of himself. This move is broken down into two stages, the first one is where he's at the side of the arena, swinging his massive sword to do massive BRV hits (200-500 normal, 1000-3000 critical), the way to dodge these moves is if he swings his sword vertically, dodge to the side, if he swings horizontally, dodge upwards. The second stage begins when he throws the swords into the arena, and circles of light appear in the ground around your character; in that moment, you've got to run the fastest that you can to the side of the arena that isn't enveloped by the circles of light. If this move hits you, you will be left with 1 hp, and that's pratically game over.
So that was all for his HP movements, my other tip is to always stay on the air while you're fighting him, that will annul three of his most damaging BRV moves, and if you train enough on quick battle against him, you will learn how to efficiently block his aerial BRV moves ;)
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