Great job, one of my favorite game so far!
The controls felt good and were kept simple enough, the visuals were clear and looked good, but mostly, the attack patterns of the boss almost all felt interesting to evade and fair. I know how hard that is when you have so many different patterns, great job on this!
I was a bit confused every time I started the fight since the arena for the first phase is huge and the boss is often out of screen.
Thanks for the game I had a good time!