Instructions
Initialize the game disc on your Xbox 360 console and press the "A" button to skip the intro scenes. Press the "Start" button when prompted to load your "Left 4 Dead 2" gamer profile.
Scroll down the "Left 4 Dead 2" main menu to the "Options" list item and press "A" to select it. Choose "Audio/Video," "Controller," or "Storage" to begin modifying your "Left 4 Dead 2" settings. From the "Audio/Video" menu, modify the "Brightness," "Color Mode," "Film Grain Amount," "Splitscreen Direction," "Master Volume," "Music Volume," "Closed Captioning" and "Gore" until you are satisfied with the settings. From the "Controller" menu, modify the "Button Layout," "Stick Layout," "Vertical Sensitivity," "Horizontal Sensitivity," "Look Type" and "Crouch Mode" until you are satisfied with the settings. From the "Storage" menu, select the storage device connected to your Xbox 360 that you would like to use for the game save files. Press the "B" button to save your settings and go back from each of the three settings modification menus.
Begin playing "Left 4 Dead 2" with your newly modified game settings by selecting a game mode, such as "Campaign" or "Versus."