Use the "peek" method (L1/R1 while behind cover) to line up headshots without exposing yourself to sustained fire .
Enemies often wear flak jackets; a single headshot is much more efficient than unloading a full clip into their torso . Syphon Filter 3
While some missions allow for "guns-blazing" tactics, many objectives require stealth (e.g., Kabul, Afghanistan) where being spotted results in instant failure . Mission List & Key Objectives Use the "peek" method (L1/R1 while behind cover)