Great presentation, very pretty - I especially liked the dice roll animation and pickup notifcations. I got a pickup that activated when my shields were destroyed, but I didn't really understand how the shields worked; which part of the UI was my shield bar and which was my health. There also wasn't much feedback for when I took damage, so I couldn't really tell how well I was doing at any given moment. Oh, and I didn't even realise it was a rhythm game until I read through the page again after playing! >_>
Despite all that, I still enjoyed the game though!