A bit rough, to be honest. It's weird that the track sticks to one side of the screen. Why would you ever even go on that side of the screen then? You can get pretty dang far just by sticking your die in the lower left corner and leaving it there. Obstacle rarely come that way.
It's also no really clear which things flying down from the screen will hurt you and which will heal you. I tried to grab almost everything at least once since it wasn't really clear what hurt and what didn't.
Also, why is there a random "13.76" under your score? I passed that and nothing happened. It was odd.
Another important thing to keep in mind is "time to reset". When the player dies, both the "You Died" and intro text are way too long. It can take upwards of ten seconds to get back into a new gameplay loop. That's way too long for a game like this!
Having said all that, it's a finished game and it's playable, so that's a feat in and of itself. Most people who think about making games will never even get that far. Be proud!