If the player gets his/her character killed, the game can be resumed from the point the last password was given at.
The lead character kills to make money, hence he is not (in his eyes) a murderer.
Throughout the play, characters are either killing each other, trying to or talking of having someone killed.
The character Pete Campbell's father is one of the passengers killed.
The main character, seeing everyone dying around him, kills an old woman, allegory of the disease.
So if the characters killed each other in the allotted time limit, the game would still consider it to be a victory.
As a character kills enemies, this meter starts to fill.
Though the player can defeat the dragon in battle, the characters cannot "kill" it according to the story.
Another character experienced similar misfortune to others, and eventually killed himself.
One character, the Viper, can kill by merely shaking hands with a victim.