I like the "lunge" mechanic and I think it could be expanded upon; It's a risk vs. reward decision, but right now there seems to be very little reward for using it. Sometimes it can be helpful but most of the time I was better off just moving and not using it. I've seen minigames that work a similar way before but none of them had a mechanic like this, I like it! Its also an opportunity to add some unique and satisfying visual/animation to the player.
It's kind of difficult to differentiate the sprites for good and bad. Also a more satisfying sound effect for collecting a good post would be nice ^^
Really simple and addicting! I like the music, and the gameplay is surprisingly complicated.