Get at a certain angle were the bullets co not hit you. When a rocket appears, face the front then press Square, X to loop it. When he shoots the laser, loop that as well. Do the other things, such as the shoe battle, then you should be on Desert Of Knaaren's. You must get the helicopter boost. Then, go to the next power-up and to kill the reflux enemy. You must wait until he is shooting stars, then get the heavy metal fist at the edge. Note: You can get shot on the bars -- jump when you see them. Also keep getting life and jumping when you see the sparks on the bar. Then, get up and keep shooting him up close and dodge the sparks. Keep doing that while he is doing other attacks. Stay on the bars; do not go in the lava and collect health until the health bar is full. You can keep revisiting levels to get all the cages and get more life plus a bigger health bar. Also, when you are fighting the hoodlums and are near the second doctor, they get shielded.