Firstly, play the game (obviously), and choose the difficulty. There are 9 levels total. Once you select, all you need to do is to get apples and finish it. Use WASD or arrow keys to move. There is a checkpoint. In case you die, you'll spawn where the checkpoint is. Press the 'W' or space in your keyboard to respawn immediately. Make sure to stomp the orange 'goombas'. The more levels you play, the more harder it goes. On the level editor, press any of these numbers to choose you would like. Click anywhere to build. Clicking on source code is recommended. So that the costume size may fit accurately. Prepare the lag before you do so.