Heavenly Sword - Get close to him if you see him stop in one place. This usually means that you need to complete a button sequence before you can take his life bar down further. There are three button sequences you need to complete during this battle.

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Get close to him if you see him stop in one place.  This usually means that you need to complete a button sequence before you can take his life bar down further.  There are three button sequences you need to complete during this battle.