I think you did a really good job with this. I commend you for doing the music as well as everything else--that is a lot to do in the 72 hours! I loved that every time I restarted it was randomised so that I couldn't memorise the best path. I will say that it would have been nice to know what the powerups did before collecting them--maybe an index on the side to indicate their effects. Might just be a personal preference though and overally, really great job!