Hello ! That's such a cool game ! I had a lot of fun playing it ! I would love to see this idea further developed for a whole game :D
I would advise you to take a bit more time to explain the main mechanics and the combat mechanics though, I had some troubles to understand it at first, but I did understand it was perfect !
I also had some bugs with the enemies being invincible and not able to touch me anymore after I healed, but after reflection, I realize that they were probably fake enemies, so you might have to ignore this x)
Good job ! :)