We went hands-on with Call of Duty: Modern Warfare 4’s multiplayer to see how Infinity Ward is tuning up movement and gunplay in this year’s Call of Duty offering. After two years of Black Ops games, Infinity Ward returns to the helm for this year’s entry into the Call of Duty franchise. With Call of Duty: Modern Warfare 4, the developer says it’s entering a new chapter–both for the series that helped catapult Call of Duty into its status as…