The Shadow win condition is "All the Hunters are dead," and the Hunter win condition is "All the Shadows are dead." Since you can win if you're dead, what happens if an attack simultaneously kills the last Hunter and the last Shadow? (Machine Gun or Judgment from a neutral) Do both sides win?
This didn't actually happen, but we discussed the hypothetical, as it could lead to an "Everyone but Bob wins" scenario. It's never good to be Bob.
Bob can win too, if he kills the last Shadow and Hunter with a machine gun, flare of judgment, or dynamite, and takes enough equipment from the kill. Other Neutrals may also share in the win, except Charles and (from the expansion) David; Bob, Charles, and David can only win on a kill if it is their own.