Thank you for such constructive feedback! I've listened to you and added a difficulty selection on the backstage level. Thank you for helping to make my game better!
There are only 2 levels in the game. You can select a level after pressing the start button in the main menu. If you pass the backstage level, you will automatically get to the pizzeria level. After the pizzeria follows the ending, after which there is nothing. I hope this has answered your question. If you have an idea for a new level, I will consider it and possibly add it to the game. Thank you for your comment!