if u are toatally hopeless and really cant beat him, a good thing to do is level up wisdom(even though its boring) and get quick run, then when he does the gyser thing u can dodge out of the way, and then quick run torward him and get a few hits on him. also use a limit to do some good amounts of damage on him when u have a clean shot. when he does the water form thingy, press triangle like crazy its the only way. k have fun!!