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.
Alternate costumes
Successfully complete the game, wait until the credits
end, and save the game. Load the saved game file and play through
the game again. After successfully completing the game a second
time, wait until the credits end, and save the game. Load the
saved game and play through the game again. Snake will change
into a tuxedo in the elevator during this game.
Alternate ending and music
Successfully complete the game with the Tuxedo costume.
Konami game surprise
Play the game using a memory card that contains a saved
game from any prior Konami title (Castlevania Symphony Of The
Night, ISS Soccer, Suikoden, Policenauts,
Silent Hill etc.) When Psycho Mantis attempts to read your
character's mind, he will mention various game titles.
Control briefing view
Wait for the message "Camera Change" or "Camera
Free" to appear during a briefing. Press [Square] or
[Triangle] to zoom in or out. Press [Circle] to switch
views. Press [X] to stop the briefing.
Stealth gear
Successfully complete the game under the easy difficulty
level after submitting during the torture by pressing [Select].
Otacon will give your character the stealth gear after being saved.
Allow the credits to complete, then save the game. Load the saved
game to begin with the stealth gear.
If you do not press [Select] and you defeated Liquid Snake
on top of the destroyed Metal Gear on the first match (no retries),
you will get the Stealth gear. It does not matter what happens
to Snake when he is being shocked. Whether surrendering or not
you can still get the stealth gear.
Bandana
Successfully complete the game without submitting to
the torture. Your character will save Meryl and receive the Bandana.
When equipped, the bandana will allow unlimited ammunition on
any weapon.
Tuxedo Snake
When you start your game for the third time on
the same save, the memory card icon will be the Ninja. Snake will
be change into a tuxedo when he is in the elevator. Additionally,
the "Cyber Ninja" will be in a red costume.
Stealth Gear and Bandana
Successfully complete the game in normal mode after
submitting to the torture sequence. Wait through the end credits.
A short FMV sequence showing Snake and Emerich getting on a snowmobile
will begin. Snake and Emerich will talk for awhile, then Emerich
will give him the Stealth Gear. Wait for the score and skill rating
screen to appear. Save the game, turn off the PlayStation, then
reload the game that was saved. You will start at the first level
(dock) and now have the Stealth Gear. You should now not submit
to the torture sequence so you can save Meryl and get both the
Bandana and Stealth Gear.
Camera
Reach area B2 of the tank hanger. At the end of the
hallway to the right of the door where you fight revolver is a
secret room that is entered after using C4 explosive. In the room
are card 4 and card 6 doors. The camera is in the room behind
the card 4 door. Use the camera to take pictures to see various
extras, such as the faces of the development team.
Development team photos
Use the camera to take pictures at the following locations.
| Name | Location |
| Fujimura | Elevator in the Comm Tower B complex |
| Fukushima | Heliport; looking out to sea from cliff |
| Hirano | Elevator in Comm Tower B; deep in the shaft of top level |
| Ishiyama | Heliport top of building |
| Ito | Inside elevator to tank hangar |
| Jerem Blaustein | Sniper Wolf's corpse |
| Kaneda | The mirror located in the Women's restroom |
| Kimura | MG underground base; tip of Metal Gear 's railgun |
| Kinbara | Dark area of stairs |
| Kitao | Decoy Octopus (fake DARPA chief) corpse |
| Kobayashi | Rock in canyon |
| Kobayashi | Johnny Sasaki holding cell, near DARPA chief |
| Kojima | Otacon lab; the picture frame to the right |
| Korekado | Men's restroom |
| Kozyou | Behind the watertank-like structure in the Canyon |
| Kutome | Observation room |
| Makimura | Hidden armory store room; behind the weakened wall |
| Matsuhana | Hallway of corpses; outside Otacons lab |
| Mizutani | When fighting Metal Gear |
| Mori | Lowest point of elevator; Comm Tower B |
| Mukaide | Reflection in wolfdog cave puddle |
| Muraoka | Water in cargo dock |
| Nakamura | In Meryl's blood pool; where she is sniped |
| Negishi | Sewage waterfall |
| Nishimura | Next to Baker's corpse |
| Okajima | Maggots of the real DARPA Chef in cell |
| Onoda | Where Baker is tied up |
| Sasaki | Picture frames in the Commander's room |
| Sato | Comm Tower A; roof destroyed by Hind D missiles |
| Scott Dolph | Deep down in the dark from the walkway between Comm Towers A and B |
| Shigeno | Heliport,security caera by staircase |
| Shikama | Electric floor |
| Shimizu | Wolf dog cave; first crawling point |
| Shinkawa | Deep in Sniper Wolf's hallway behind the second pillar |
| Sonoyama | Torture machine |
| Takade | Ninja room; glass atedga |
| Tanaka | Heliport; sleeping soldier |
| Tougo | End of boiler room; in Blast Furnace with the steam |
| Toyota | Container in the middle of Raven's warehouse |
| Uehara | Edge of elevator; where the ravens are |
| Yamashita | Tip of nuke warhead in nuke storage room |
| Yoshimura | Dead end of air duct |
| Yoshioka | Bridge on the third floor of the blast furnace |
Codec numbers
Use all these frequencies to contact people in the
Codec.
Roy Campbell and Doctor Naomi Hunter: 140.85 (to back up Snake)
Mei Ling: 140.96
Nastassia Romanenko: 141.52 (Nuclear specialist. Provides healthy
information on using weapons)
Master Miller: 141.80 (Provides psychological information and
advice. Reveals information on Naomi at the end of the game)
Otacon (Dr. Hal Emmerich): 141.12 (Provides advice on beating
Metal Gear)
"Deepthroat": 140.48 (Unknown. Later revealed at the
end of the game)
Meryl: 140.15
Red Grey Fox
Get to Grey Fox while dressed in the tuxedo.
Pantless Meryl
When you find Meryl on patrol in the office, she runs
to the women's bathroom. Follow Meryl into the Women's bathroom
and reach the last stall in under five seconds. Meryl will be
caught with her pants down during an FMV sequence.
Look in the vent just before the DARPA chief (Decoy Octopus) to
see Meryl doing sit-ups. Leave the vent and re-enter and she will
be doing one-armed pushups. Repeat and she will be doing leg stretches
on the wall. Repeat one more time and she will be doing the leg
stretches while pantless.
Run and shoot simultaneously
Take out your weapon (for example, the SOCOM pistol),
then hold [Square] + [X] and move Snake on the D-Pad.
He will run and shoot simultaneously.
Accurate shots with rocket launcher
When you get the sniper rifle and the rocket launcher,
look through the sniper rifle and aim at your target. Then, quickly
change to the rocket launcher and fire. This will result in a
more precise and accurate shot.
Web site credits
Record the end credits onto a video tape. Pause the
tape at the very end and it to see a web address that has information
about the next game in the series.
Alternate title screen (Japanese version)
Press the D-Pad at the title screen to change
the background colors.
