As a 3D platformer, this game is fantastic. Beyond the movement being extremely fluid and responsive it has an aspect that I seek out of 3D platformers, expressing yourself with said movement. You can, in a way, sequence break levels, which I did a lot by abusing the wallkick, to the point that the bounce jump was the very last upgrade I got. It's the perfect combination of letting you go crazy with the sandbox of movement, but also incentivizing you to do so.
However, as a metroidvania, ehh...
The combat just sort of exists and while the lack of a map is a problem the real issue the lack of direction. It never actually feels like any of the areas are connected, so a lot of time I got this feeling of "Oh, I'm here?" At the very least I appreciate the game's direction of "Just go find these 5 thingamagigs and get to the end."
The foundation is more than great, so I'm hoping a sequel comes one day to polish the rough edges.