You will learn how to do this when doing the chapter “The Lowdown East Pass” at the beginning of the chapter. There is a short tutorial at the beginning of the level, what you need to do is when the gunman shoots the bullet, enter focus mode by pressing , then press and hold until the bullet comes pretty close to you. You’ll know it’s close because the controller will start rumbling. Release (Y), if you did it correctly it will show you a scene where the bullet shatters everywhere behind Afro. The fragments will kill any nearby enemies.