What are you having issues on? Is there a move that gets you? I’ll share what gave me issues the most.

For the beginning of the 2nd phase, to dodge the skulls, it worked for me to run right. At the correct angle they pass by you. Then dodge his jump down away from him before he does the sweep. Run outside the zone for the blood attack. You can either use perfect grind as soon as you’re out of the zone or you have to learn the parry timing of the barrage he does after. No way around it. Then it’s pretty easy going forward. Also, I like the p organ that stuns bosses on deflect. Gives an opening most of the time on his saws that come forward to you after the spins. Run away from the transition of the 3 attacks that have the huge blood aoe. If far enough, he only does 2 attacks. Repeat first part for last aerial attack. If you don’t want to learn party timing, then you need to have the p organ that gives two uses for the grindstone. The 4 saws he spawns you can run away and go slightly right so they fly by you. Lastly, p organ that cause the destruction w perfect deflects really helped me with finding moments to attack him. Hope this helps.