I beat it first try!
It was a pretty fun fight the only bad part was being thrown straight into it and having to learn my controls through trial and error. I really like the creative clock hand attacks, especially the one in phase 4 (or 5?) where there are like 3 green hands coming from multiple directions and you have to be really attentive of your block timing.
One tiny critique is that the red arc drawn between the two clock hands is supposed to represent the progress towards beating the current phase of the boss, but every time I see it, my primal gamer brain thinks that it will damage me if I stand inside of it because it's red.