Puff – 10
30 enemies killed with exploding gel.
way easier on level 7:
there's a constant supply of craps at the beach while searching for the 5 clamp-sisters. just attract 4 or 5 craps; then hover as dragon over the water (the craps can't follow and will not attack) and kill on until a blue drop drops and push in your lifeforce (Lt). as the craps line up just right to be killed, you'll easily get the 30 kills here.