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.
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.
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? This also works on the demo.
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