The Eye Patch skull disables auto aim for all weapons and is found on The Library mission. Its simple - right before you grab the Index, circle around the search the back of the room (right the way back) behind the Index. The Skull is on the ground.
Xbox360Cheats.com is an unofficial resource with Xbox 360 cheats provided by members of the public. We are usually unable to test submitted Xbox 360 cheats, so please use them at your own risk.