Metal Gear Solid 2: Sons of Liberty Cheats

First equip the thermal gogles then hold up the soldier go on the front of the soldier you will see the dog tag of yhe soldier then aim the soldier at the head that causes the soldier to shake and the dog tag will fell of the ground then get it...

During any Codec conversation, press the Left Analog-stick or Right Analog-stick to control the character's faces. Press L3 or R3 to zoom-in on the faces. Press R1 or R2 while Snake or Raiden is listening to someone to hear their thoughts.
Game Shark Codes
North American Version
Full Version Codes
Master Code (Must Be On) EC8783B4 14483424
Tanker Level Codes
Infinite M9 Ammo 4C89EE12 1456E788
Infinite USP Ammo 4C89EE18 1456E788
Infinite Magazines 4C89F134 1456E788
Infinite Grenades 4C89F132 1456E788
Infinite Chaff Grenades 4C89F128 1456E788
Infinite Stun Grenades 4C89F126 1456E788
Infinite Rations 4C89F1A2 1456E788
Infinite Bandages 4C89F1AC 1456E788
Have Therm Goggles 4C89F1BA 1456E7A6
Have DG. Camera 4C89F1BE 1456E7A6
Have Body Armor 4C89F1AE 1456E7A6
Have Bandana 4C89F1E4 1456E7A6
Have Stealth 4C89F1B4 1456E7A6
One Pull-up Increases Grip to Level 2 0C89EEE2 1436E7884C89EEE2 1456E788
Two Pull-ups Increases Grip to Level 3 0C89EEE2 1426E7880C89EEE2 1436E7E44C89EEE2 1456E7E4
Plant Level Codes
Infinite M9 Ammo 4C89F062 1456E788
Infinite SOCOM Ammo 4C89F066 1456E788
Infinite PSG1 Ammo 4C89F06C 1456E788
Infinite RGB6 Ammo 4C89F06A 1456E788
Infinite Nikita Ammo 4C89F070 1456E788
Infinite Stinger Ammo 4C89F06E 1456E788
Infinite AKS-74U Ammo 4C89F07E 1456E70C
Infinite M4 Ammo 4C89F088 1456E70C
Infinite PSG1-T Ammo 4C89F086 1456E788
Infinite Magazines 4C89F084 1456E788
Infinite C4 4C89F072 1456E788
Infinite Claymores 4C89F074 1456E788
Infinite Grenades 4C89F082 1456E7B1
Infinite Chaff Grenades 4C89F078 1456E788
Infinite Stun Grenades 4C89F076 1456E7B1
One Pull-up Increases Grip to Level 2 0C89EEE8 1436E7884C89EEE8 1456E788
Two Pull-ups Increases Grip to Level 3 0C89EEE8 1426E7880C89EEE8 1436E7E44C89EEE8 1456E7E4
Demo Codes
Master Code (Must Be On) ECB79FF8 1456E60A
Infinite Rations 3CBB523E 1456E7A2
Infinite Bandage 3CBB5246 1456E7A2
Infinite Diazepam 3CBB524A 1456E7A2
Infinite Grip 4DD121CC 1456E89D
Have M9 & Infinite Ammo 4CBB53CE 1456E788
Have USP & Infinite Ammo 4CBB53D4 1456E788
Have SOCOM & Infinite Ammo 4CBB53D2 1456E788
Have FA-MAS & Infinite Ammo 4CBB53D8 1456E788
Have C4 4CBB53E2 1456E781
Have Chaff Grenade 4CBB53EC 1456E7A1
Have Stun Grenade 4CBB53EA 1456E7A1
Have Grenades 4CBB5300 1456E781
Have Enemy Uniform 3CBB5250 1456E7A6
Have Empty Mags 4CBB53FA 1456E781
Have Camera 4CBB5262 1456E7A6
Have ST Camera 4CBB53E8 1456E79F
Have Box A 3CBB5276 1456E7A6
Have Box B 3CBB5278 1456E7A6
Have Box C 3CBB5268 1456E7A6
Have Wet Box 3CBB527C 1456E7A6
Have V Sensor 3CBB527A 1456E7A6
Have Tobacco 4CBB5266 1456E7A6
One-Hit Kill Olga 4DE8B5AC 1456E7A6
Japanese Version
Demo Codes
Master Code (Must Be On) ECB78550 1456E60A
Infinite Rations 3CBB4E3E 1456E79F
Max Rations 3CBB4E7E 1456E788
Infinite Bandage 3CBB4E46 1456E79F
Infinite Diazepam 3CBB4E4A 1456E79F
Have M9 & Infinite Ammo 4CBB4FCE 1456E781
Have USP & Infinite Ammo 4CBB4FD4 1456E781
Have FA-MAS & Infinite Ammo 4CBB4FD8 1456E788
Have Enemy Uniform 3CBB4E50 1456E7A6
Have V Sensor 3CBB4E7A 1456E7A6
Have Tobacco 3CBB4E66 1456E7A6
Have Box A 3CBB4E68 1456E7A6
Have Box B 3CBB4E78 1456E7A6
Have Box C 3CBB4E76 1456E7A6
Have Wet Box 3CBB4E7C 1456E7A6

Plant level:
Collect 30% of the plant dog tags,or 73 dog tags:infinity wig
Collect 50% of the plants dog tags,or 121 tags:the stealth suit
Collect 70% of the plants dog tags,170 tags:wig B
Collect 90% of the plants dog tags,218 tags:wig A

If you move the joystick in the right direction in the last cutscene you can see Vamp in the crowd for a split second.

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.

To get the special items in the game, you need dog tags. Here is a list of how many you need for each item:
Tanker
Bandana - 30% of all dog tags or 46 dog tags(infinite bullets)
Stealth - 50% of all dog tags or 78 dog tags(invisible to enemies but bosses)

Plant
SP wig - 30% of all dog tags or 73 dog tags.(infinite bullets
stealth - 50% of all dog tags or 121 dog tags.(invisible to enemies but bosses)
Wig B - 70 % of all dog tags or 170 dog tags.(infinite grip guage)
Wig A - 90 % of all dog tags or 218 dog tags.(infinite O2 guage)

To get the special items, you must complete the episode in question and save after all the movies/credits. When you load the game for the next game, you can pick either the tanker or plant and you'll get the items you gained.

I trust you all know how to get dog tags, but if you don't, then read this. When a guard has his back turned to you, go up to him with a hand-gun and press fire but keep it held. Then, when the guards arms fling up into the air, walk to his front with your gun still pointing at him. Aim the gun at his face to get a dog tag. If the guard says something like "who are you" or "just try to pull the trigger", then shoot him in the arm or leg with your Socom/USP.

All guards have dog tags on the difficulty levels very easy, easy, normal, hard and extreme excepet the guards who are called in for back-up.

Collect 60 dog tags in tanker and 120 in plant