First off, I want to commend the visuals of this game. It looks fantastic ! I love the color palette, the pixelated textures and the low poly look of the world. Fantastic job on that front ! The vfx and feedback for combat also looks great !
Unfortunately, I feel like combat is very much dragging down the game. In particular, the flying enemies are quite frustrating for reasons already listed in other comments. They got me to drop the game.
Movement is mostly solid. Though, I feel like the character's jump is too high and the roll is broken (you can spam it in the air forever to essentially glide). I would investigate way to design more interesting platforming challenges. The one at the start for the health upgrade is interesting, but it feels like a late game challenge rather than one you would do at the start of the game. In general, the difficulty curve need another pass on the project.
There's potential here and I hope you keep working on it ! These visuals really sell the world and its vibe !