My one critique if you have a MineCart Attached to you, then you should be able to craft from the minecart at whatever location, without having to go back and forth between the minecart and the location. if the minecart is away from you then of course you shouldn't be able to do this. but if its next to you, it really would be nice if you could.
only complaint is that 26 and 27 are almost impossible to perfect completely. i understand their difficulty beforehand. but maybe making some incredibly high damage upgrade possible after beating the game would be nice so i can have all gold stars.
To get the impossible badge it all comes down to recognizing the shapes as they are not random. Its also important to rest one circle whenever you are in a small circle or red circle. Its also important to recognize when ever there's a speed up.
For sure and I hope to do something like that in a full version, thanks for playing!