I was pretty confused at what was happening at first -- had to read the game's description to understand my rolls were stopping the die. Partially I was confused because it wasn't clear when it was the enemy's roll and that at that point I couldn't control anything and all I had to do was wait. Though I think it would have been neat if you also controlled the enemy's roll -- just instead of going for high numbers, you now have to get low numbers to defend against the enemy, like in Paper Mario. Anyway, I think all you'd have to do to fix the player communication issue is just add some visual/audio feedback or just some text onscreen saying "space to roll".