One thing you need to avoid is getting shot in the head. If you get shot in the head, you die no matter how big you are. Also, on the Toxic Dump Part III, when you see a sign with a skull and crossbones, that means it's where garbage and toxic stuff get dumped. Next to the sign, notice that the edge of the land is smoother than the other edges of land. When you go across, stay away from that side, because if you're wondering why you'll die if you just try to go across the land with the light post things on each side, it's because if you touch the edge of the land where the dumping area is your ooze will start to drain into the water. Losing too much ooze too fast will kill you. If your too big, touch the edge only a little bit so you'll lose health, but you'll survive and be small enough to cross safely. And one last tip, you should use the attack that makes you reach out at enemies-your control settings in the options menu might be different than mine, but for example, if you press A to spit ooze at enemies, press the arrow of where you want to aim and B or C at the same time. If B doesn't work, then do it with C.