All Weapons and Items, All Cinemas, Replenish Health, and Racetrack Key

Enter any of the following codes during gameplay and not while the game is paused:

All Weapons and Items:
Press L2, R2, R2, L2, L2, L2, L2, R2, L2, R2, R2, L2, R2, R2, L2, L2, R2, L2, L2, R2. Lara will scream if you entered the code correctly.

Open All Levels:
Press L2, R2, L2, L2, R2, L2, R2, L2, R2, L2, L2, L2, L2, R2, L2, R2, R2, R2, R2, L2. If you entered the code correctly, Lara will say no, and you'll advance to the next level.

All Cinemas:
Press L2, L2, L2, L2, L2, R2, L2, L2, L2, R2, L2, R2, L2, L2, R2, L2, L2, R2, L2, L2. If you entered the code correctly, Lara sighs. At the Load Game option, you can access a new option, "Story so far..." that plays all the cinemas from the game.

Replenish Health:
Press R2, R2, L2, R2, L2, L2, L2, L2, L2, L2, R2, L2, L2, L2, R2, L2, L2, L2, L2, L2. If you entered the code correctly, Lara will sigh and her health meter will be full.

Enter the following code while training at Lara's home:

Racetrack Key:
Press R2, L2, L2, L2, R2, L2, L2, L2, L2, L2, L2, R2, L2, L2, L2, L2, L2, R2, L2, L2. If you entered the code correctly, Lara will say no. Check Lara's item inventory, and you'll find the racetrack key. Now you can unlock the door to the quad track and practice Lara's driving skills.