I cannot express just how amazing the regen parry feels, getting one right makes you feel so awesome, and the attacks feel equally as fantastic to pull off. Learning the boss patterns and timings here feels so satisfying because of just how much the game rewards you for doing so, I felt myself focusing super hard on remembering the timing because I just wanted to keep parrying even when I had full health, which is the sign of a fantastic mechanic. I do wish it did a bit of recoil damage to the boss upon successful parry just to make it an even more integral mechanic