Ok, so first of all the background looks really good. Great job on that. The music was also pretty good too. The idea of the enemies moving with the player is kind of interesting, but it's a bit confusing at first how they go towards you when they're on the same level as you. (although to be fair, it does make for a really good and challenging enemy, but they just seem strange at first) Also, the game looks a bit flooded with ui elements in the game. I don't think you need to have the games title or the current level there, and maybe you could have the "press r to restart" on the menu or just have it pop up when you start the level. Good job though!