Just to let you know, I love this idea and there is a ton of potential here! The best way to unlock it is if you give out all the shots you need at the beginning of a level, then the player would have to solve a puzzle using the rhythm blocks and the platforms (like which ones light up at which time to get across). With the current system you have put up here it's way too easy to cheese your way through the levels. And this is a minor side note, I think that having the beats match up to the music would definitely add some kind of WOW factor to the presentation of the game!! Outside of a control adjustment (which made it too hard to get past a certain level), I'd say it was a fine game.