Infinite amo.
kill solid snake on expert or hard without getting shot

Waking up sleeping enemies:
When you knock out an enemy, either by choke, punch, or tranqualizer gun, you can use your coolant spray to wake him up. If you point a weapon @ him when he comes to, you can get his dog tags.

Bloopers and Punishment
OK, here goes: If you want to see Otacon scold Snake, just do the following:

1) Watch the TV in the crew's lounge, then contact Otacon again. He'll scold Snake for being a couch potato instead of doing his duties.

2) Light up a cigarette and contact Otacon. He will give Snake a unwanted speech about the dangers of smoking, blowing his cover when doing so, and informing him that he has to think for other people's health as do his.

3) Hide yourself in a locker and contact Otacon. When Snake makes a crack about that "wee" accident, watch what happens!

4) For you guys who love adult humor, look at the posters in First Person View Mode, and contact Otacon. You'll see Snake doing the unthinkable.

Translated Opening Sequence:
During the Opening Movie press the Circle Button to Change the Language.

Transform Faces:
During using the Codec rotate the analog stick to change the faces.

Prevent Reinforcements:
When being found, use a small weapon to shoot their codec so no reinforcements can be called.

Make Enemies Run:
When being spotted take your biggest gun. Sometimes enemies get scared and run away.

Use pipes to disable enemies
If a guard is next to a hot pipe, you can use it to your advantage. Shoot the pipe in specific locations to release steam and disable the guard. If the steam hits his leg he will limp and not be able to follow you properly. If the steam hits his arm he cannot shoot. If the steam hits his radio he will not be able to alert backup.

Big head mode
At the Start Menu type Up, Up, Down, Circle, Triangle, Left, Right. You should hear a sound to indicate the code has been accepted, and all characters will have big heads.

Move CODEC Screens
While talking to Otacon on the CODEC, use the left analog stick to move Otacon's face and the right analog stick to move Snake's face !

FARTING FATMAN
Shoot Fatman three times with socom then when he falls shoot him on the ass and you'll hear a funny sound.

Breeze Through The Hostages
When in the room with the hostages, you don't have to deal with those annoying guards. First, shoot out all the lights from the overlook when you come in the door. Next, wait until the gaurds are all shootable from there, and knock them all out with your M9 tranquilizer BEFORE THEY CAN SEE EACH OTHER GET TRANQUILIZED. If they see another guard get shot, you are caught. Once they are all asleep, drag them all quicly to a common area where you can repeatedly re-tranquize them. If one of them is called, he says dreamily,"Nothing to report," and you can breeze though the hostages.