>>7286362Dodge to his left (so your right) during Phase 1. He'll miss you on the vast majority of his attacks and you can wail on him between dodges.
If you are good at parrying you can also get him stuck in a parry loop and cheese the entire fight:
https://www.youtube.com/watch?v=rHOU6AWn4jEBut honestly that's not as easy as most people who make it seem because you really need to get the timing right and stay far enough back that your R1 attack hits him, but not so close that you visceral.
For Phase 2 (unless you cheese and skip it) I never got an especially fluid strategy that didn't rely on lots of blood vials. But the way I've gotten him down to wining most of of the time is by rolling into his impact area after his jumps, hiting him a few times, then rolling out. Repeat that and just wait for the next jump.
Also fight out in the ocean, way easier to dodge his ayy lmao lazers on the ground.
There also used to be a watch to glitch him into the rocks, but I think that was patched.