I think you have the start of something good here, but it definitely needs to give the player some more feedback. From what I could tell spinning charged up your ability to use the heal and attack. I saw that I lost some spin and healed when I picked heal, but with attack I wasn't sure sure anything was happening at all.
I think the puppet boss is cute and music is nice but every time you picked an option in the fight the music would restart from the beginning.
Finally, I like the ideas for the attacks but the sword hitbox seems a little big for its sprite which resulted in hits that felt a little unfair.
With some polish this could definitely be a pretty fun little battle!