Hi, unfortunately i run into many issues. Some more general ones are that the characters are hard to see because they are so small, same thing about the UI. I'm not sure what the read and blue bars are for. I would assume that the red bar is for health, but you die with one hit anyway so I'm not sure about it's point. Also after you die the retry menu isn't scaling properly and after retying I cannot move the character without completely reloading the page first.
I would love to try out the game more because the lack of in-air control presents a unique, though kinda nerve-wracking challenge, but its hard for me to play the game in its current state. Good luck on further development!