This how you beat this over-weighted dude: I recommend you use Benkei for him. When the Feud starts put yourself in a good-angle which would be right in front of him but don't go too close to his force-field.
When your good activated Kamui which is L1 then he says "Die!" 1 second later he shoots so click square at the right time do it twice until he's force field breaks then come close to him and start hitting him with your over-sized weapon!
When you see him move his hand get away from him 'cause he's going to activate his force-field the n keep doing kamui and whacking him till he dies. It's ok if you die as long as you got health and has save (there's one near the door to his room).
After killing him be prepared cause theres going to be a big surprise after that trust me! You are one step closer to beating the game and I'm not being sarcastic. It took me 4 tries before I killed the dude without being hit once.
It's the boss after him that really kicked me up (last boss)!
When the main boss (the gold dude) is shooting the rays of light hide under the lily pads and block. Also, use the stone power as much as you can, he will usually attack at least 3 to 4 times when you do.