This article is a list of collectible dog tags in Metal Gear Solid 2: Sons of Liberty. These are bonus items in the game, which can be obtained by holding up enemy soldiers, and pointing an equipped gun to their head or groin. On the higher difficulty levels, some soldiers will not give up their dog tags so easily; to obtain them, the player must discharge their weapon or use a big gun like the RGB6 or Stinger in order to threaten them.