PC Gamer: In Fallout 3 you gained special abilities called perks every time you levelled up. Some perks would do simple things like boost your attributes and open up new conversation options. Others, such as Mysterious Stranger, would randomly call in a revolver wielding rogue to help you out in firefights. Obsidian’s follow up, Fallout: New Vegas will have a whole new selection of abilities. Obsidian have sent us a brief but early look at three of the perks you’ll be earning as you fight your way through Sin City.