This was such a weird and cool concept.
The game really shines when you're just blasting across the stage and teleporting to take over new shapes but because less fun when you eventually hit the wall of having to camp the reload station back and forth to get new shapes.
I think the upgrades can help with that as your shapes become more powerful it makes it easier to destroy some of the tougher enemies and spawn new shapes too keep your chain going, The issue is that collecting shapes itself goes against the funnest aspect of the game because you're forced to give them up and go back to the reloading.
I went to the second level and just grinded a bunch of shapes for awhile just so I could enjoy the other levels more without having to worry about shape collection.
I like the art direction and the sound design, i think it hits really well with the arcade nature of the game.
All in all, it's a fun experience that could do really well with a few tweaks.