Concept: interesting spin on the theme.
Gameplay: metroidvanias are ambitious for jam games but you kinda nailed the execution. The level design is super well done, I loved the different platforming segments, they felt fair and introduced the new abilities with really good pacing. The controls for walljumping felt a little tricky and needed some time to get used to.
Art: the spritework's really well done, it all looked nice and consistent. The lack of level background was a bit jarring, I suggest at least setting the color of it to something that matches the level to make it stick out less. Also I think Arial isn't a very good font choice here, fits in poorly with the rest of the art, creates an unpolished look.
Audio: the background track is nice, the lack of sound effects is a bit of a negative though.
I really like this one overall, the presentation isn't perfect, but the game executes the metroidvania-concept amazingly, congrats!