Dante's 5 Levels of Scratch

To increase the difficulty of life, you must simply destroy as many advantages as possible. By decreasing your own speed, much like you might decrease the speed of a moving sprite character in Scratch, you make life slightly more difficult. In order to do this, you could cut off your own legs, or maybe sit in a sofa for years on end until your flesh literally grows into the fibers of the furniture. This actually happened. Anyway, the blocks you'd want to use in order to switch levels would be the broadcast block, which would activate after touching the goal of the current level and would broadcast a signal telling the backdrop to change and thus changing the level as well. Neat-o.