After you defeat Dr. Robotonik as Emerl, you will beam over as Sonic and must defeat Emerl when in a turbo-mode state. It does not matter how weak Emerl's attacks might have been, he can still whip you around like nothing. Use your special attacks by pressing A in the original order (1, 2, 3). When he comes at you. jump and press R until he is KOed, then just press R when he comes at you the next time. If he does come back at you rather quickly, he is healing himself; run at him and press R. Keep doing this pattern and you should defeat him easily. Note: This works 99.9% of the time. Additionally, after defeating Dr. Eggman as Emerl in his story mode, you will have to fight the now out of control Emerl. The easiest way to do this is to use your basic three hit combo, then hold Back and pressing B to hit him up into the air. When he comes back down, hit him back up into the air again. Keep doing this until you win. It helps if you do the attack just before he touches the ground.