MASSIVE BARBARIC BATTLES
Barbarians, because of their barbaric nature, love to fight. About anything, and often, about nothing. Sometimes they fight over women, sometimes over land, sometimes just out of goddamn sheer boredom. Fighting is fun, because when you are a barbaric mother fucker, you get to win!
Often, as depicted below, barbarians form into large armies and battle their enemies over huge regions of terrain.
Barbarians who are victorious, then frequently fight one another as to who gets the largest share of war spoils. This method works well for two reasons. The first is that barbarians get two fights in one! First, they kill off their enemy, then get to fight each other just for shits and giggles! The second reason is that because their kill off their fellow victorious barbarians, they get to keep all the treasures won over from their former enemies!
Of course, one of the best advantages of being a victorious barbarian is the women you get. You see, women love men of power and fortune. Since you have killed off numerous people, you are obviously powerful. And since the other barbarians are dead, you get their wealth, and so, you have a fortune. It's easy as pie!