So I have this secret organization that needs to eliminate most of the humans on Earth. They have designed bunkers to save the right amount of people, but in order to start over they need to remove everyone else. Naturally, they figured that orbiting death satellites would do the trick, but they aren’t sure what kind of weapon would fit their purposes best.
Some clarification. They don’t want to destroy the planet, render the surface uninhabitable for any long period of times, or completely sterilize the surface. The only goal here is to destroy all human life on the surface of the planet. What orbital weapons, or combinations of weapons, would do this the best? The more apocalyptic it looks the better!