Monster is vanquished while underwater by self-sacrificing scientist and his oxygen destroyer. Alien on spaceship is killed when astronauts don spacesuits and de-pressurize the ship. Telepathic beings are dispatched by a time bomb in a briefcase in the custody of a man thinking only of a brick wall. Fluids from bees and wasps cause airborne monster to crystallize. While fire works against the aliens temporarily, the real key is salt water, which reduces them to a chlorophyllic pulp.
Creature is lured into a nosecone of a rocket and sent to Mars.
Robot has his face partially burnt with nitric acid and is finally set ablaze with a torch. Microscopic alien viruses can survive only within a narrow pH range. Dangerous creature captured by enormous brassiere. Creature is strangled with chain by slavebabe in bikini. While still scalding hot from having molten lead poured on it, creature shatters after being sprayed by a water sprinkler.