When the game first starts, press the "FIGHT" button to attack. Different types of attacks will come towards you as the game continues. (Difficulty are random) At the bottom right, there's the hp bar. If your HP bar drops to all 0 (all red), that indicates that you lost. When impacted, you have 2 seconds of immunity to all attacks. Try and survive Scratchy's rage as long as possible as it is impossible to beat this almighty being.