Enjoyment 5/5: I have next to nothing negative to say. Everything about this game that might be considered 'rough' for a platformer of its style is less than the standard value of 'rough.'
Execution 5/5: Almost no bugs or glitches to be found. My only real nitpick is that some of the map choices involve some one-ways up and down that seem like they could have maybe been two-ways.
Sensory: 5/5. Everything feels very tightly integrated; visuals/sfx/music are all about the same right era and quality all-around. Love the Kirby-esque enemies.
Metroidvania: 5/5. There's a fair bit of map to explore and quite a few mobility upgrades. Push to attack works really well.
Theme-Relevance: 5/5 Your interpretation was strong IMO and it also integrated well with the game mechanic choices and aesthetics.
This is my first 5/5 of the jam. IDK if it's presently a contender for top 5, but if it's not, it should be.