I'm not gonna lie, I really liked the sound design and the way the dice fly around after you shoot them. However:
- The 'dead' dice still give you points if you shoot them;
- The shots 'kill' dice even after rebounding off a wall or the floor, maybe consider destroying them after they collide or at least making them non-deadly;
- I'd rebalance the mouse movement speed, player movement speed, gravity strength, and jump strength (mouse movement speed for example is too fast to be accurate);
- I'd make the dice spawn more often over time, eventually I got the hang of it and got bored because there was little challenge.