First, get all of the marbles (red, blue and green), the Legendary Spoon, and the Hampault 2 to Spat Tower. Use it to get over the locked bridge. You will see a puzzle. Solve it and talk to the black Hamster blocking the door. Say Liber-T and the Hamster will let you go inside the door. You now have to fight Spat. Use Hamscope on Spat's robot and he will say that "That won't work on me!" Lose to him and the black Hamster will say "You lost to Spat? Rocks won't work on him. Harmony makes Love Shots and I think you should get them". Go to the Clubhouse and see Harmony. Get the Love Shots and fight Spat again. Use Hamscope again. Use it on Spat (the Love Shots), but it will not work on him the first time. After awhile Spat's robot will open its mouth. Use Hamscope again just when the robots mouth is open. Aim at the bottom of the mouth and fire a Love Shot at it. He will then be defeated.