Played through the first two hours.
So far, it's fantastic. The Fuse and Ultrahand mechanics work brilliantly, it looks and sounds lovely, and the way the level design gently guides and teaches organically is just masterful.
My only issue is that the somewhat complex controls are taking a while to commit to muscle memory, but that's less a flaw in the game and more just the kind of learning curve that naturally comes with any game this in depth.