Metal Gear Solid 2: Sons of Liberty

Dog Tag Know How Dog tags are hidden on many of the soldiers. If an enemy has one, youll see a glowing spot on their chest where the tag would hang. Youll need to surprise them at gunpoint (Hold Square when near them), then walk over (hold L1 while holding square) to stand in front of them. Point the gun at their face, and eventually theyll shake with fright and drop the tags. Once you pick them up, you can view them from the title screen in the Special Menu. To obtain the tags from the persistent soldiers, do the above, and then Shoot them in the hand or near their face. That will get them to co-operate.
Obtain Bandana (Unlimited Ammo Tanker) Collect 25 dog tags on the Tanker Episode and finish the game.
Obtain Blue Wig (Inf O2 Plant) Collect all dog tags on the Plant Episode and finish the game.
Obtain Brown Wig (Inf. Ammo Plant) Collect 100 dog tags on the Plant Episode and finish the game.
Obtain Digital Camera Beat the game once on the normal difficulty setting and start again from the save.
Obtain Orange Wig (Inf. Grip Plant) Collect 175 dog tags on the Plant Episode and finish the game.
Obtain Stealth (Plant) Collect 150 dog tags on the Plant Episode and finish the game.
Obtain Stealth (Tanker) Collect 50 dog tags on the Tanker Episode and finish the game.
Unlock Alternate Title Screen Clear the game on any difficulty setting.
Unlock Separate Missions Clear the game on any difficulty level and you will be able to play the Tanker and Plant Missions separately.
View Dog Tag Locations Clear the game on any difficulty setting and you will be able to view the locations of all the dog tags. Go to the Special menu, then Dog Tag Viewer. When you highlight a missing dog tag you will see it's location at the top of the column.