Awesome game, for a first experience on game development it's really a great entry ! I have some advices if you want to continue the game :
- Add feedbacks : when the player is taking damage, make a sound, shake the screen, add sound on every actions the player do (dash, do damage to an ennemy...)
- Polish the character controls : the attack comes five or six frames before we press the button, and we fill it (it should be practically immediate, even if there is a great animation on the attack, it shouldn't take over the game feel) the character seems slippery on the ground and you can add a jump that is higher or lower when pressing longer a button, as Mario.
For the attack energy bar and the fact that we can't move while attacking, it really slow down the pace of the game, but it could be a game design choice sooo... You'll have to improve it and test it so it becomes more fun
But overall it's a great prototype, so keep it up !