And if you plan to add levels to the game, maybe also allow us to unlock 1 of the 2 doors and depending on how many levels we beat we can unlock the last door. I think it would give us players something more to do. As far as what should be behind those doors, i leave that to your imagination. It can be funny, cool or even a scare just for shits and giggles, hell maybe a special shop behind one of those doors.