Metal Gear Solid 2:
Sons of Liberty

Special Message From Otacon
If you take pictures of all the girl posters, and the two locker doors that have a guy and girl on them next to each other, and upload them to Otacon instead of the photos of the Metal Gear Ray, he will reply you in many interesting ways.

Waking up Soldiers
If you need to get a Dog Tag from a knocked out guard, just spray coolant on his face to wake him up and then try to hold him up.

Getting Dog Tags
Most of the normal guards in the game have Dog Tags that contain the names of the game's development team and those that won Konami's contest. To collect the Dog Tags you must hold up the guard and then make him shake and give it up by pointing your gun at his head or crotch. Dog Tags can be collected for each of the game's four difficulty levels.

Zoom-in on Cut-Scenes
Press the R1 button to zoom in on the real-time polygonal cut scenes. When holding the button down, you can move the camera around slightly with the right analog stick.

Extreme Mode
After finishing the game once, you'll unlock the Extreme difficulty level.

Get Digital Camera
After you beat the game, you can play the game over with the same save and you'll have the Digital Camera in your inventory for both the Plant and Tanker episodes. You can use this to take pictures and save them onto your memory card.

Get a Wig
First play through both the Tanker and Plant episodes and get every dog tag. Then start a new game and save. You will then have a wig in your inventory that gives you infinite ammo and allows you to not have to reload.

Bathroom Problems
When you're listening to the conversation between Ocelot and Solidus with your Directional Microphone, press left to point the microphone at the bathroom. You'll be able to listen to a very humorous scene where some guy is having problems on the toilet.