Press W, SPACE, KEY UP to jump. Press A,D, KEY LEFT, KEY RIGHT to run. Use Jumper to jump higher. Some objects in the room can help you, some objects can kill you, and you can kill enemies by jumping on them.
Game make autosaves between levels.
Original inspiration, indie PC Game, "Being Struck By Lightning is Probably the Best Way That You Could Die On Account of All of Its Awesomeness" by lokijki