I HATE THIS DAMN RABBIT.
All joking aside, wonderful little boss fight. The controls on this are really tight. The challenge level is great - all three attack patterns felt fair, even when sped up, and I felt like I was in control of what I wanted to do, just bad at it. :D
One minor quibble I have is parry timing - sometimes I'd get hit and also parry the same projectile, which seems wrong. Another minor complaint was wishing there was some sort of stamina bar or recharge timer visualization so I could see when I got my parry & dash back. Definitely nitpicky stuff, though. If this boss/mechanic was in a Mina the Hollower-esque game I would not bat an eye. Great job!