Instructions
Push down on the right analog stick on the Xbox controller at the beginning of the duel to draw your hand next to the gun.
Press and hold the left trigger on the controller as soon as you see the the words "Draw" appear on the screen. Your character will draw his gun and an aiming reticule will appear on the screen.
Guide the aiming reticule with the left analog stick as quickly as you can onto the opposing players body. Once you have gotten the reticule in place, hold it still.
Press the right trigger on the Xbox controller as soon as the aiming reticule turns white. As soon as you do, the reticule will turn red. Continue pulling the right trigger on the controller while the reticule is red to fire off your shots.