Hey there! Good job on the game :D it's a nice gameloop and the leaderboards are also a nice touch. I didn't understand how to beat the last level as the pentaon in the center seemed unkillable to me.
The art is nice and clear, the red level is a little strong on the colors though (I just noticed it while writing it that my eyes are tired out by the strong bright colors).
All in all though the game was fun!