I really enjoyed your game! I agree with the other comments that the projectiles could use a little more contrast and that could greatly improve the experience! Leaderboard was a great addition.
That's an awesome game! Congrats, had a lot of fun with it! One thing, though, is that in the final 30 seconds, you can stand still in some spots depending on the level and be done with it. I would fix that with homing projectiles to keep the player moving.