While playing a game, quickly press L2, R2, L2(2), R2, L2, R2, L2, R2, L2(4), R2, L2, R2(4),
L2. If you entered the code correctly, Lara will say "Nope".

  All weapons, medkits, flares and save crystals

While playing a game, quickly press L2, R2(2), L2(4), R2, L2, R2(2), L2, R2(2), L2(2), R2,
L2(2), R2. If you entered the code correctly, Lara will scream. -From: [email protected]

  All secrets

While playing a game, quickly press L2(5), R2, L2(3), R2, L2, R2, L2(2), R2, L2(2), R2, L2(2). If
you entered the code correctly, Lara will say "Ahhhh". Enabling this code will also unlock the "All
Hallows" bonus level. -From: [email protected]

  Full health

While playing a game, quickly press R2(2), L2, R2, L2(6), R2, L2(3), R2, L2(5). If you entered
the code correctly, Lara will say "Ahhhh".

  Race key in Lara's home

While playing a game in Lara's home, quickly press R2, L2(3), R2, L2(6), R2, L2(5), R2, L2(2). If
you entered the code correctly, Lara will say "Nope".

  Lara's basement and race course key

Go to the Library. When Lara walks in the doorway, there are two bookcases to the right.
Approach the one on the left and press Action. Then, Lara will pull a book and the fire will
extinguish, allowing her to climb up the side wall inside the fireplace. After reaching the top, follow
the passageways until reaching a room with two levels, with a switch on the top level. Pull the
blocks in a way that a hallway leading into the attic is revealed. When Lara pulls the switch, the
basement door will temporarily open. Quickly run through the attic, and down to the main hall to
reach the basement. Once in the basement, walk through to the second room and look in the tank
on the right side. Inside is the key to the race course. To collect it, pull the block in the other room
to the center. Climbing up to the hall that leads into the tank.

  Lara's museum

Activate the switch behind the diving board in Lara's pool room. Then, go to the door it opens in
her main hall. Pull the switch, sprint straight across her lobby and roll into her museum. Artifacts
including The Dagger of Xian are in her museum. -From: David Nield and Andrew Holland

  Flares in Lara's home

Press the button beside Lara's bed which was the gun cabinet in Tomb Raider 2 for flares. Note:
You may need to turn the brightness up on your screen to view the flares.