First 20 seconds and i already notice two things about your game:
1) It's basically impossible (at least for me) to watch two sides at the same time and switch eyesight to the other side it's really difficult to do too, so i often focus first on the black side and then on the white side, resulting me to being surrounded by enemy on the white side
2) When a level is loaded enemies have already moved quite a bit, and often they can even deal you damage, so it's a bit frustrating and/or unfair to the player :P
Other than that it's a really fun game, that would do great for a mobile game imo (even tho i have no idea on how the controls would adapt on a mobile device xD) I especially loved the simplicity of the art style!! Good Job!!