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Technical demonstration mode Successfully complete the following modes in order - "Training", "Time Trial", "Gun Shooting", "Survival." Note: Completing each mode will unlock the next mode in the sequence. "Technical demonstration" mode will now be unlocked. Use it to watch the CPU demonstrate its best time with the gun. Stealth Suit When you beat the game, if you leave with Otacon, he will give you a prototype of an item called "Stealth." This allows you to walk near, through, and around guards, through trip lasers, and in the field of vision of cameras without alerting. This appears in your inventory when you start your second game. Bandana When you beat the game, if you leave with Meryl, she will give you a prototype of an item called "Bandana." This gives you infinite bullets with any weapons you have. This appears in your inventory when you start your second game. Tuxedo Beat the game twice and get both endings (one with Meryl and one without). When you play a third time, enter the elevator in the Cargo Dock. You'll remove your scuba gear and change into a tuxedo. Red Ninja Beat the game twice and get both endings (one with Meryl and one without). When you play a third time, the ninja will be wearing a cool red and black outfit. Uncensored Butt This is a cheat for those who feel they need to see the most ever bared on the Playstation. On the level where you try to save the Darpa chief in the cell, you will meet Meryl, who helps you shoot the intruders after the chief dies. You kill the gunmen and after the cinema sequence go back into the cell where you saw a man naked on the floor. Now get on the ground and take out your scope. You'll notice that the guy's butt is censored, but when you scope in ALL THE WAY you'll notice something the company never thought about. Eeech. Opening Changes Every second time you play, the initial cut scene when Solid Snake emerges from the water is shown from a different angle. This alternate start is repeated back and forth with the original cut scene from the beginning onward. Psycho Mantis Memory Reading Some of Mantis' reactions depend on the save games of other Konami games you have on your memory card. Try confronting him with a Castlevania, ISS Soccer, Suikoden or Silent Hill save game on your memory card for startling revelations. Easier Mantis After Mantis reads your mind, the screen will go black for a second before the battle begins. To make the fight MUCH easier, simply plug the controller into the "controller two" slot. He won't be able to read your mind anymore and will be easier to kill. Easier Revolver When you blow up all the walls needed to get to the room where you find Revolver Ocelot, go back and get more C-4.When the fight begins run straight to the wall to the left. Place one C-4 ON THE WALL. If it's on the floor too far it will trigger the explosions and kill Baker. Now, chase Revolver around untill he runs right up to the C-4. Detonate. BOOM. Takes off a lot of his power. Repeat this pattern two or three times and he's dead. Pee on the Box! Just after trekking through the Caves for the first time, and before you and Meryl enter the Underground Passage to Comm. Tower A, stand facing Meryl with the wolf dogs yapping nearby. Slap Meryl roundly in the face. Meryl whistles and the dogs attack you for such an action. However, if you place a Cardboard Box over you immediately after slapping Meryl, the wolf dog puppy investigates the box. Cocking its leg against the side of it, a stream of wolf dog urine splashes you and the box. You now smell of the wolf dogs, and the hounds now leave you alone on subsequent trips through their lair as long as you're wearing the box they peed on. Sheesh. Catching the Flu Sneezing every minute can attract guards. Combat this with medicine, but to achieve a sneezing fit every time, fail in Revolver's torture room and come into close contact with Sasaki in order for the cold to be transferred. It helps if you are rescued by the Ninja for maximum exposure to the Sasaki flu. Meryl in her Undies In the Women's Restroom where you meet up with Meryl prior to the Psycho Mantis confrontation, follow Meryl straight in and move up to the top stall within five seconds. Meryl will not have time to properly change, and spends the first part of the conversation without her combat pants on. Woohoo. Meryl in her Undies 2 When you go into the duct system to save the Darpa chief, look down at Meryl and go back out of the duct system. Then, go back in the duct system and look down at her again and she will be doing sit-ups. Then, go out of the duct system again and go back in. She will be doing leg presses. Go back out of the duct system yet again and the process will repeat. Only now she will be in her panties. Was it really worth it? Shy Meryl When walking around with Meryl, keep staring at her in first-person mode. Meryl starts blushing, turning embarrassed and tapping her gun to her leg. Keep looking at her, and she turns more and more red, whispering embarrassed little questions. How cute. Cardboard box uses Tired of those long walks between the armory and every other part of the game? Well, here's what to do. Once you have a cardboard box, you can ship yourself to different locations from any transport truck in the game. Just get in the truck near the edge, put on your box and wait. Eventually a guard will come by and ship you out. Cardboard Box A: Get shipped to Heliport, works in Nuke Depot and Snowfield trucks. Cardboard Box B: Get shipped to Nuke Depot, works in Heliport and Snowfield trucks. Cardboard Box C: Get shipped to Snowfield, works in Heliport and Nuke Depot trucks. Animal Rights: Shooting crows and rats will make Roy and Naomi upset. They'll contact you through the Codec and tell you how mean you are. Hehe! Secret Ghost Pictures: After you get the Camera, take pictures of the following locations to see hidden ghost figures of the development team. To view them, select the 'Album' option at the main menu. 1. Kojima: Otacon lab (the picture frame to the right) 2. Matsuhana: Hallway of corpses (outside Otacons lab) 3. Sato: Comm Tower A (roof destroyed by a Hind D missiles) 4. Nakamura: In Meryl's blood pool (where she is sniped) 5. Shinkawa: Deep in Sniper Wolf's hallway behind the second pillar 6. Uehara: Edge of elevator (the one were the ravens are) 7. Negishi: Sewage waterfall 8. Mizutani: When fighting Metal Gear 9. Korekado: Men's restroom 10. Sasaki: Picture frames in the Commanders room 11. Sonoyama: Torture machine 12. Toyota: Container in the middle of Raven's warehouse 13. Kozyou: Behind the watertank-like structure in the Canyon 14. Shimizu: Wolf dog cave (first crawling point) 15. Kaneda: The mirror located in the Women's restroom 16. Fukushima: Heliport, looking out to sea from cliff 17. Takade: Ninja room, glass edge 18. Fujimura: Elevator, in the Comm Tower B complex 19. Shikama: Electric floor 20. Kimura: Metal Gear underground base, tip of of Metal Gear's railgun 21. Kobayashi: Rock in canyon 22. Okajima: Maggots of the real DARPA Chef in cell 23. Nishimura: Next to Baker's corpse 24. Mukaide: Reflection in wolfdog cave puddle 25. Onoda: Where Baker is tied up 26. Kitao: Decoy Octopus (fake DARPA chief) corpse 27. Yoshimura: Dead end of air duct 28. Hirano: Elevator (Comm Twr B) deep in the shaft of top level 29. Muraoka: Water in cargo dock 30. Ishiyama: Heliport top of building 31. Ito: Inside elevator to tank hangar 32. Jerem Blaustein: Sniper Wolfs corpse 33. Yoshioka: Bridge on the third floor of the blast furnace 34. Mori: Lowest point of elevator (Comm Twr B) 35. Kinbara: Dark area of stairs 36. Tougo: End of boiler room (in Blast Furnace where the stem is) 37. Makimura: Hidden armory store room (behind the weakened wall) 38. Kutome: Observation room 39. Tanaka: Heliport, sleeping soilder 40. Shigeno: Heliport, security camera by staircase 41. Yamashita: Tip of nuke warhead in nuke storage room 42. Kobayashi: Johnny Sasaki holding cell, near DARPA chief 43. Scott Dolph: Way down in the dark from the walkway between Comm Tower A and B Game Shark Codes Infinite Air 800ae1ac03e7 Infinite Health 800b752603e7 SOCOM Pistol and Ammo 800b75320019 FAMAS Rifle and Ammo 800b75340065 Grenade 800b7536000c Nikita and Ammo 800b75380004 Stinger and Ammo 800b753a0004 Claymore 800b753c0006 C-4 800b753e0006 Stun Grenade 800b75400006 Chaff Grenade 800b75420006 PGS1 Rifle and Ammo 800b75440006 Never Reload 800ae164000d Scope 800b755c0001 Cigarettes 800b755a0001 Cardboard Box A 800b755e0001 Cardboard Box B 800b75600001 Cardboard Box C 800b75620001 Night Vision Goggles 800b75640001 Thermal Goggles 800b75660001 Gasmask 800b75680001 Body Armor 800b756a0001 Camera 800b75720001 Rations 800b75740002 Medicine 800b75760004 Diazepam 800b75780004 PAL Keycard 800b757a0001 Mine Detector 800b75800001 MO Disc 800b75820001 Rope 800b75840001 Handkerchief 800b75860001 Ketchup 800b756c0001 Steath Suit 800b756e0001 Bandana 800b75700001 Level 10 Key 800b757c000a Never Have Time Bomb 800b757e0000 Extra Ammo SOCOM 80067cd00001 Extra Ammo FAMAS 800682ec0001 Extra Ammo Stinger 8006951c0001 Extra Ammo Claymore 800698d00001 Extra Ammo C4 80069c1c0001 Extra Ammo PSG1 8006a3700001 Extra Ammo Nikita 80068fd80001