Love this game! The motion and fluidity is ridiculous! And the chains of kills you can get are addicting and phenomenal.
As others have said before me, however, there is a bug where you get bronze rather than gold. It's odd, because it always happens whenever I completely blow the time out of the water. I did a 20 second level in 4.9 seconds and got bronze. Perhaps the number difference is the problem. I'm unsure.
5/5. Please fix the bug soon though!