Various Cheats

All Weapons
1) Get on a flat surface where you can jump
2) Sidestep left, sidestep right, sidestep left
3) Hold the WALK button and move backwards then forwards. Release the WALK button.
4) Turn around three times
5) Jump backward and press Circle (the ROLL button) in the air

Exploding Lara
While playing, hold the WALK button and sidestep Left, then Right, then Left, then step Forward, then step Backwards. Then turn Lara around three times in any direction, then jump forward and while in the air press the ROLL button.

Goodbye Butler
Tired of the pesky butler following you around everywhere in Lara's home? Walk into the kitchen and open the freezer, go inside and wait for the butler to arrive. Once he comes in jump over him and close the door behind you. Bye, bye, butler.

Level Skip
1) Get on a flat surface where you can jump
2) Sidestep left, sidestep right, sidestep left
3) Hold R1 and move backwards then forwards ~ release R1
4) Turn around three times
5) Then Jump forward and press Circle in the air

Secret Room in Lara's House
When you explore the outside of the house go to the front door and open it. Walk straight in and look at the two halls on each side of the clock. You will be coming back to the righthand hall after you hit the switch I'm getting ready to tell you about.

Leave from the door you just opened and go to your left, head into the maze. Go left always in the maze unless your only option is to go right. When you get to the back of the maze you will see a brick wall, look down the hall and you will see two openings. Take the first opening to the right and fall into the hole. Then go to the end of the hall and jump out, push the button on the wall and you will see a cinema of the door opening back in the house. This door is timed, so you have to be fast.

Go back the way you came in, jump out of the hole and go left. Then keep following the maze turning right everytime unless you have to turn left. Exit the maze at the end and run back into the house and through the door. It leads to the basement below, where you'll you will see several chests and windows on each side. It looks like a huge statue is on the right.

MUST HAVE A GAMESHARK TO USE THE CODES BELOW

Infinite Auto Pistol Ammo
8008c5ac 00ff

Infinite Grenades
8008c5bc 00ff

Infinite Harpoons
8008c5b8 00ff

Infinite M16 Ammo
8008c5c0 00ff

Infinite Shotgun Shells
8008c5b4 00ff

Infinite Uzi Ammo
8008c5b0 00ff

Great Wall Level Codes
Infinite Health-8019CF52 03E8
Moon Jump-D008AAD4 0010
                  8019CF50 FFE0
Long Jump--8019CF4E 006B

Venice Level Codes
Infinite Health--801C19E6 03E8
Moon Jump----D008AAD4 0010
                     801C19E4 FFE0
Long Jump-----801C19E2 006B

Bartoli's Hideout Level Codes
Infinite Health----801D0CBE 03E8
Moon Jump------D008AAD4 0010
                       801D0CBC FFE0
Long Jump-------801D0CBA 006B

Opera House Level Codes
Infinite Health---801CF2F6 03E8
Moon Jump------D008AAD4 0010
                       801CF2F4 FFE0
Long Jump-------801CF2F2 006B

Offshore Rig Level Codes
Infinite Health---801BEC86 03E8
Moon Jump-----D008AAD4 0010
                      801BEC84 FFE0
Long Jump------801BEC82 006B

Diving Area Level Codes
Infinite Health--801BDDA2 03E8
Moon Jump-----D008AAD4 0010
                      801BDDA0 FFE0
Long Jump------801BDD9E 006B40 

40 Fathoms Level Codes
Infinite Health--801BB482 03E8
Moon Jump-----D008AAD4 0010
                      801BB480 FFE0
Long Jump------801BB47E 006B

Wreck of The Maria Doria Level Codes
Infinite Health--801CFE86 03E8
Moon Jump-----D008AAD4 0010
                      801CFE84 FFE0
Long Jump------801CFE82 006B
Have All 3 Circuit Breakers-----80088B48 0003

Living Quarters Level Codes
Infinite Health--801B6916 03E8
Moon Jump-----D008AAD4 0010
                      801B6914 FFE0
Long Jump------801B6912 006B

All Level Codes
Infinite Oxygen-----------------8008C4FE 0708
Have All Weapons------------80088AA0 000B
Have All Keys,Items,etc.---80088B34 0009