This is great! I'm surprised I've managed to get so far (level 7), despite being on the verge of quitting at the first level already xD The game was reaaally difficult for me at the start for some reason and I was going to quickly tell you to decrease the game's difficulty by a lot, but now it seems okay and more balanced :)
Though, another problem I've had in terms of difficulty was with distinguishing myself and the enemies, it was mainly a problem at the start and got OK later since you could see yourself from a huge distance, but I'd suggest maybe making it so the different blocks have a bit more contrast and so that everything is a bit more smooth and moves at more frames. That way, you can coordinate your moves more precisely and not have an enemy hitting you everytime because you were too slow or something xD
Anyways, this was a good one! Fun to play and also felt a bit different from what I've been playing in the last couple of weeks ;)