Alternate selection screen
At the Konami logo before the introduction to the game,
press Start in order to get a different picture at the selection screen. Instead
of a pictures of the Ninja, it will feature the Ninja with his mask broken open.
New stuff to unlock
First person play mode
Successfully complete the game once to unlock a first person play mode option.
Infinite ammo
Successfully complete the game without submitting when being tortured to save Meryl. Then at the end
of the game you will receive a bandana. Save your game, then start a new game using the same saved
game. Now when you equip the bandana you can use an unlimited amount of ammo and will not have
to reload your gun.
Stealth camouflage
Successfully complete the game with submitting when being tortured to not save Meryl. Then at the
end of the game you will receive stealth camouflage. Save your game, then start a new
game using the same saved game. Now when you equip the stealth camouflage enemies (except
bosses) and cameras will not detect you.
Play as the
Ninja...the easy way
In the intro, there is a picture of the Title Screen with the Ninja on it, wait
till the 4th time they show it. The 4th time guy will not have the helmet on,
press Start. The Opening Title will have the guy with no helmet, play the game
and go into the Special Section. In the special section there will now be a
ninja option.
Camera
Reach area B2 of the tank hanger. Then at the end of the hallway to the right of the door where you
fight Ocerot is a secret room that is entered after using C4 explosive. In the room are security card
level 4 and 6 doors. The camera is in the room behind the security card level 4 door.
Alternatively, beat the game with submitting when being tortured. After you receive the camera there will be an
"Album" option on the main menu, use this option to view pictures that have been taken.
New textures
Successfully complete the game two times using the same saved game, and getting a different
ending both times by getting the bandana and stealth camouflage. Then, next (third) time reach
Ninja without using the bandana or stealth camouflage. If done correctly, Ninja will be red.
There will now be new textures for Snake and Ninja and new bonus music during the ending.
Alternate costume
Successfully complete the game two times using the same saved game, and getting a different
ending both times by getting the bandana and stealth camouflage. Then, Snake will change into a
tuxedo in the elevator during the next (third) time the game is played.
Alternate title screen
At the title screen, press the D-pad to change the background color.
Konami game surprise
Play the game using a memory card that contains a saved game from any prior Konami title
(Castlevania, ISS Soccer, Silent Hill, Suikoden, etc.). Then when Psycho Mantis attempts to read
your character's mind, he will mention various game titles.
Access Mei Ling
Photo Shoot
To access the photo shoot with Mei Ling (in the "Extras" option on the
Main Menu), you must have a memory in one of the slots that has Sneaking Mode
beaten with you having the number-one records on ALL of the Time Attack levels.
There's 30 levels (15--No Weapon, 15--Socom), so this takes a while.
Name: Frequency
Campbell/Naomi 140.85
Mel Ling 140.96
Master 141.80
Otacon 141.12
Meryl 140.15
Nastasha 141.52
Deepthroat 140.48
Hints:
Box destinations
Equip a box while in the trucks to travel to the destination on the boxes.
How to complete Variety
Mission 13
Knock down the giant soldier on the right (that enters first), before both
of the soldiers get to the point when they stand still. While the first soldier
is falling over, the second soldier will reach his post and stand still. The
first soldier will get up, become confused, roar, and attack the second soldier.
They second guy will get up and fight, finishing the mission for you.
Annoy Campbell
Snipe the rats above where you first encounter Wolf or Snipe the ravens when at your second encounter
with Raven.
Defeating Psycho Mantis
Plug the controller into port two and press any button before fighting Psycho Mantis. The word
"Hideo" will appear in the corner of a black screen. Use controller two to fight against Mantis to keep
him from knowing your moves.
Seeing through Psycho Mantis' eyes When fighting Psycho Mantis, press Triangle to see
through his eyes.
Easier driving scene
To get a better view when shooting at Liquid Snake in the driving scene, hold Triangle while shooting
the gun.
A Glimpse at the Next Metal Gear Rex
When you've completed most of the missions and have a 96.6% rating, you should
have one more mission to accomplish. Once you've beatin the last mission it'll
come to a screen that shows you a picture of the next model of Metal Gear, which
will be in "Metal Gear Solid 2: Sons Of Liberty". It should say
"Confidential" in the left part of the screen.
Access the Mei Ling Photo Shoot
You must get the 1st place records in the Sneaking Mode, Time Attack, Socom and
no Weapon, there is 30 stages, it takes a while to do this.
Metal
Gear Rex preview:
Get to the final mission with at least a 96.6% rating. Complete the final
mission to view a screen that features the next Metal Gear model from Metal Gear
Solid 2: Sons Of Liberty on the PlayStation2.
Ninja mode:
Get your accomplishment rate up to at least 85%.
Special mode unlocked
While playing any level on sneaking mode pause the game and hold L1 and
press L2, R2, Triangle and R1. Then Unpause the game and keep repeating until
you hear Snake say something. Then go to special mode and everything will be
unlocked
Hidden ghosts
Take a picture of the following locations using the camera to view hidden ghosts who are KCEJ
development team members.
| 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 |