Great game!
The art-style and graphics are good. Music is apt to the game. Game mechanics work smoothly. The stages are nicely built and look simple yet beautiful. And for those who're complaining there's no pause button, try the escape key.
However, rather than just the in-game badges, you could have implemented actual medals here.
In totality,
Art-style= 4/5
Music=4/5
Gameplay=4.5/5
Total=4/5
Overall, a really great game by the author. Keep it up!