Indeed, there is more to stories than a few places, some guns and one opponent. The most important part you can use is the ability to find ways to throw a wrench into the story, have a few main characters die, and then have the rest change as they go, take UO for instance: He was very scared of combat, once Cam went missing, UO slowly followed in his footsteps and eventually became as cold as Cam is when it comes to mercy.