I called my brother a cheater while playing Heroscape once, so he punched me in the head. So then I flipped the board, and he proceeded to punch me many more times. That being said, I really enjoyed the intro/outro of the game and the humor it brought to this game!
Some minor improvements: Although i think what you did you did nearly perfectly, it was a bit two dimensional in its gameplay. Adding a new factor to the levels (besides new obstacles) would have kept me more drawn into the game. Something like dice faces having different abilities (maybe it would split a number of dice equivalent to the number on the face?) would have just brought a whole new aspect to the game. It would have also incorporated the theme a bit more as well, rather than the tie-in to the theme just being the fact that you're throwing a dice.
Overall though, this is a super well made and clean game. I love the sfx and graphics. Also your physics were perfect. I played through all the way to the end and didn't regret it! Great game!