Yes its good but its feels like its on the wrong order of phase. Or they should've include another 3rd phase fight considering they make suounding that dark. Its strange for that beautiful shadow attack was set as Perception last desperate attack.
We wont get Vita until Sa's influence is the cause of the problem the only thing that is somewhat linked to Sa is the thing at 1:55 its similar to Sa's boss fight with also the 7 chimes here its 7 spirits(?)