Really cool, it was nice to help you. <3 :)
Level 4 looks really cool! The Post Processing vignette effect is cool too. If you add a boss to the game, it would be cool if you would add that vignette effect like changes, zooms in, out. And it would be cool that you would add an heartbeat sound effect. So that vignette zooming would be rythm with the heartbeats. :) Pretty cool game.