Its quite hard to understand whats going on when you die. The idea of having multiple dices is fun but i didnt understand at first. when you lost a life, you should add a feedback. Maybe not respawning at the beggining of the level. And yes, level design is not perfect. Maybe you should make your assets bigger and a simple level design.
I thought that one of my dices was an ennemy. Make real differences should be better.