I love me a good boss fight! The difficulty was quite fun and it only took me a few tries to figure out the strategy for the stone block move. You also took care to do clear telegraphing, which made things very fair and I never once blamed the game for my own skill issues lol.
Obviously the jam deadline was tight, but it would be nice to see some more feedback especially when it comes to either you dealing damage or taking damage. Hitting the count, for example, would be great if there was some kind of visual feedback or even knockback - the latter is more of my own personal preference since it feels like attacks have more weight and impact.
Really fun submission!! I try to make an effort to do at least one boss in all of my gmtk submissions too :)