I had fun trying out different moves and combos; the exchange mechanic is well done, but I think you could've went a step further, maybe have the attacks you swap go to the boss?
With the boss spending a lot of time in the air, it would be cool if some of your attacks kept the player in the air with the boss, rather than having to continuously jump to land hits.
Since there are only a few days left, I am rating and giving feedback to games with few ratings. I would appreciate it if you rated my game too. No need to leave a comment, unless you feel like it.
Thanks for the experience =]