Those who live by the sword will be gunned down by those who don't.
Any man who goes into battle without his sword is improperly dressed..
— Colonel Jack Chirchill
"Silly Squall, bringing a sword to a gunfight...": No matter what timeframe the game is set in — past, present, or future — the main hero and his antagonist will both use a sword for a weapon. (Therefore, you can identify your antagonist pretty easily right from the start of the game just by looking for the other guy who uses a sword.) These swords will be far more powerful than any gun and often capable of distance attacks.
A properly balanced sword is the most versatile weapon for close quarters ever devised. Pistols and guns are all offense, no defense; close on him fast and a man with a gun can’t shoot, he has to stop you before you reach him. Close on a man carrying a blade and you’ll be spitted like a roast pigeon—unless you have a blade and can use it better than he can.
A sword never jams, never has to be reloaded, is always ready. Its worst shortcoming is that it takes great skill and patient, loving practice to gain that skill; it can’t be taught to raw recruits in weeks, nor even months.