A and D are move controls and W is a variable jump, so you can hold it for a higher jump. If you click L, you start recording your movement. Click L again and you stop recording. Then, you press P to playback your movement. When in playback, you are not affected by gravity, so you can use playback to run and jump across gaps or up buildings. My apologies for the game being a bit unclear, if I had more time I would have definitely polished it! I plan to go back and upload a second version, taking everyones critiques into account.