1. Always make sure to look away from your enemy so as not to alert him to the fact you're about to attack
  2. Always make sure to shout as you fire so as to drown out the noise of the gun and not alert your enemy to your attack
  3. Always make sure to smile whilst you fire to lure your enemy into a false sense of safety
  4. The enemy is going to expect you to hit where you're aiming for. Gain the element of surprise by hitting different areas around where you're aiming.