Enjoyment 4/5: Actually quite enjoyed it overall!
Execution 3.5/5 rounded down: I think this game embraced minimalism to a fault. In a lot of the "outside" segments it felt like the platforms were more confusing than necessary; in a 3D game conveying the depth of objects is important. It might be because I turn into a total platforming and combat baby when I'm put into 3D, but it also felt like I fell off at least one edge I straight-up couldn't see. This is one man's opinion, but you really ought to loosen up the timing requirements a bit and make the character a little less finicky to control.
Sensory 3.5/5 rounded up: Both music and visuals are pretty, but not cohesive.
Metroidvania 5/5: I played for about 30 minutes; assuming it would have continued on the same trajectory, this feels like it meets the criteria for sure. Props for not just being like "this ability makes you jump higher."
Theme-relevance: 4.5/5 I mentioned earlier that I thought this game embraced minimalism to a fault. Accordingly, the 4.5 here is symbolic of the relative lack of minimalism in the "indoor" segments, and the clear effort towards fulfilling your own theme interpretation seems good to grade as a 5.
Play and React video below if you want it!