Tomb Raider: Legend

Successfully complete the indicated task to unlock the corresponding alternate costume:

Amanda (ritual): Successfully complete the Ghana Time Trial.
Amanda (winter): Successfully complete the Kazhkastan Time Trial.
Biker: Successfully complete England: King Arthur's Tomb.
Biker (no jacket): Collect all Silver and Gold rewards in England.
Biker (red jacket): Collect all Silver rewards in England.
Bikini (black): Successfully complete the game, all Time Trials, and collect all Bronze, Silver, and Gold rewards in all levels, including Croft Manor.
Bikini (white): Successfully complete the game and all Time Trials.
Catsuit: Collect all Gold rewards in Japan.
Classic (gray): Collect all Gold rewards in Ghana.
Classic: Collect all Gold rewards in Peru.
Evening Dress (red): Collect all Silver rewards in Japan.
Evening Dress (ripped): Successfully complete Japan: Meeting With Takamoto.
Goth: Successfully complete the England Time Trial.
Goth (lace shirt): Successfully complete the Japan Time Trial.
Legend (black): Collect all Silver rewards in Croft Manor.
Legend (blue): Collect all Silver rewards in Peru.
Legend (pink): Collect all Silver rewards in Ghana.
Legend (Union Jack): Collect all Silver rewards in Bolivia.
Snowsuit: Collect all Gold rewards in Nepal.
Special Forces (urban): Collect all Gold rewards in England.
Special Forces: Collect all Gold rewards in Kazakhstan.
Sport: Collect all Gold rewards in Bolivia.
Sport (green): Successfully complete the Bolivia Time Trial.
Suit (cream): Collect all Silver and Gold rewards in Croft Manor.
Winter (no coat): Successfully complete Kazakhstan: Project Carbonek.
Winter (no coat, pink): Successfully complete the Peru Time Trial.
Winter (no coat, orange): Collect all Silver rewards in Kazakhstan.
Winter (pink): Successfully complete the Nepal Time Trial.
Winter (orange): Collect all Silver rewards in Nepal.
Winter: Successfully complete Kazakhstan: Project Carbonek.

Collect the indicated number of Bronze rewards to unlock the corresponding character profile:

Alister Fletcher: 90% Bronze
Amanda Evert: 70% Bronze
Anaya Imanu: 30% Bronze
James W. Rutland: 50% Bronze
Lara Croft: 10% Bronze
Shogo Takamoto: 40% Bronze
Toru Nishiruma: 40% Bronze
Unknown Entity: 100% Bronze
Winston Smith: 80% Bronze
Zip: 20% Bronze

Successfully complete the indicated task to unlock the corresponding cheat. When a task has been completed, a message with the code will appear. Cheats cannot be enabled until they are first unlocked in this manner.

Bulletproof Lara
Successfully complete England with a time less than 27:00 in Time Trial mode. While playing the game, hold L and press A, R, Y, R, X, White. If you entered the code correctly, you will hear a sound.

Draw enemy health
Successfully complete Bolivia with a time less than 12:30 in Time Trial mode. While playing the game, hold L and press X, B, A, White, R, Y. If you entered the code correctly, you will hear a sound.

Infinite assault rifle ammunition
Successfully complete Japan with a time less than 12:15 in Time Trial mode. While playing the game, hold White and press A, B, A, L, X, Y. If you entered the code correctly, you will hear a sound.

Infinite shotgun ammunition
Successfully complete Ghana with a time less than 20:00 in Time Trial mode. While playing the game, hold White and press R, B, X, L, X, A. If you entered the code correctly, you will hear a sound.

Infinite SMG ammunition
Successfully complete Peru with a time less than 21:30 in Time Trial mode. While playing the game, hold White and press B, Y, L, R, A, B. If you entered the code correctly, you will hear a sound.

Infinite grenade launcher ammunition
Successfully complete Kazakhstan with a time less than 27:10 in Time Trial mode. While playing the game, hold White and press L, Y, R, B, L, X. If you entered the code correctly, you will hear a sound.

One shot kill
Successfully complete Bolivia Redux with a time less than 4:15 in Time Trial mode. While playing the game, hold L and press Y, A, Y, X, White, B. If you entered the code correctly, you will hear a sound.

Wield Excalibur
Successfully complete Nepal with a time less than 13:40 in Time Trial mode. While playing the game, hold White and press Y, A, B, R, Y, L. If you entered the code correctly, you will hear a sound.

Wield Soul Reaver
Successfully complete the game and all time trials. While playing the game, hold White and press A, R, B, R, L, X. If you entered the code correctly, you will hear a sound.

No textures
Successfully complete the game. While playing the game, hold L and press Black, A, B, A, Y, R. If you entered the code correctly, you will hear a sound.

In Game (Note that these cheats cannot be used until they are unlocked)

At the end of the level, when you stand on the button that opens the timed door, do not enter that door. Instead, go to the under the door to find a Gold statue.