I wish I could rate this higher, but I can't, simply because you left too much out. For starters, who are you? How did you get on the island? What do potions do? Literally nothing is explained! I feel like you have a decent amount of lore on paper, but you never put it into the game. The enemies are just goombas and a tall goomba that take more hits, and the bosses bore me, the prime example being the first, who just stands there and throws spears in set directions, rather than at you. But your character is one of my main problems, he's slow, his jump arc is too stiff, and his animations make him look like a robot.
I feel like there's potential here as a Zelda-inspired action platformer, but it's unfinished and boring, please, if you make a third game, make the character better in pretty much every way, explain what's happening, and give the enemies variety, I see potential here, but you just didn't bother to put everything in and we get a half-baked mess of a game.