Collected 15 Silver Rewards (25) Collected 15 Silver Rewards
Collected 30 Silver Rewards (35) Collected 30 Silver Rewards
Collected 35 Bronze Rewards (15) Collected 35 Bronze Rewards
Collected 5 Bronze Rewards (10) Collected 5 Bronze Rewards
Collected 5 Gold Rewards (50) Collected 5 Gold Rewards
Collected 60 Bronze Rewards (20) Collected 60 Bronze Rewards
Complete the Adventure (125) Complete the Tomb Raider: Legend adventure at Explorer or Adventurer difficulty.
Complete the Hard Adventure (175) Complete the Tomb Raider: Legend adventure with the difficulty level set to "Tomb Raider."
Completed All Time Trials (50) Complete all levels while in time trial mode.
Completed Bolivia (50) Complete the level "Bolivia - Tiwanaku."
Completed Bolivia Time Trial (10) Complete the Bolivia Level while in Time Trial mode.
Completed England (75) Complete the level " England - King Arthur's Tomb?"
Completed England Time Trial (10) Complete the England Level while in Time Trial mode.
Completed Ghana (50) Complete the level "Ghana - Pursuing James Rutland."
Completed Ghana Time Trial (10) Complete the Ghana Level while in Time Trial mode.
Completed Kazakhstan (75) Complete the level "Kazakhstan - Project Carbonek."
Completed Kazakhstan Time Trial (10) Complete the Kazakhstan Level while in Time Trial mode.
Completed Nepal (75) Complete the level "Nepal - The Ghalali Key."
Completed Nepal Time Trial (10) Complete the Nepal Level while in Time Trial mode.
Completed Peru (50) Complete the level "Peru - Return to Paraiso."
Completed Peru Time Trial (10) Complete the Peru Level while in Time Trial mode.
Completed Tokyo (50) Complete the Level "Tokyo - Meeting with Takamoto."
Completed Tokyo Time Trial (10) Complete the Tokyo Level while in Time Trial mode.

Character profiles  -  Collect the indicated number of Bronze Artifacts to unlock the character profiles.

Alister Fletcher Collect 90%
Amanda Evert Collect 70%
Anaya Imanu Collect 30%

James Rutland Collect 50%

Lara Croft Collect 10%

Shogo Takamoto Collect 40%

Toru Nishimura Collect 40%

Unknown Entity Collect 100%

Winston Smith Collect 80%

Zip Collect 20%

Complete the following tasks to unlock cheat codes. You cannot use these unless you have unlocked them first. You can use already unlocked cheats to make things easier.

Bulletproof Complete England Time Trial in under 27:00
Draw Enemy Health Complete Bolivia Time Trial in under 12:30
Infinite Assault Rifle Ammo Complete Japan Time Trial in under 12:15
Infinite Grenade Launcher Ammo Complete Kazakhstan Time Trial in under 27:10
Infinite Shotgun Ammo Complete Ghana Time Trial in under 20:00
Infinite SMG Ammo Complete Peru Time Trial in under 21:30
One Shot Kill Complete Bolivia Redux Time Trial in under 4:15
Textureless Mode Complete the game
Wield Excalibur Complete Nepal Time Trial in under 13:40
Wield Soul Reaver Achieve 100% Completion

Costumes  -  Perform the following tasks to unlock the relevant costumes.

Amanda Finish Ghana Time Trial
Amanda, Winter Finish Kazakhstan Time Trial

Biker costume Finish England-King Arthur's Tomb?
Biker, no jacket costume Find all Silver & Gold rewards in England
Biker, Red Jacket costume Find all silver rewards in England

Catsuit costume Find all gold rewards in Japan
Classic costume Find all gold rewards in Peru
Classic, Gray costume Find all gold rewards in Ghana

Evening, Red costume Find all silver rewards in Japan
Evening, Ripped costume Finish Japan-Meeting with Takamoto

Goth costume Finish England Time Trial
Goth, Lace Shirt costume Finish Japan Time Trial

Legend, Black costume Find all silver rewards in Croft Manor
Legend, Blue costume Find all silver rewards in Peru
Legend, Pink costume Find all silver rewards in Ghana
Legend, Union Jack costume Find all silver rewards in Bolivia

Snowsuit Costume Find all gold rewards in Nepal
Special Forces costume Find all gold rewards in Kazakhstan
Special Forces, Urban costume Find all gold rewards in England
Sport costume Find all gold rewards in Bolivia
Sport, Green costume Finish Bolivia Time Trial
Suit costume Find all gold rewards in Croft Manor
Suit, Cream costume Find all gold & silver rewards in Croft Manor
Swimsuit costume Finish Game. finish all Time Trials
Swimsuit, Black costume Find all rewards, finish game, beat all Time Trials

Winter costume Finish Kazakhstan-Project Carbonek
Winter Orange, No Coat costume Find all silver rewards in Kazakhstan
Winter, Orange costume Find all silver rewards in Nepal
Winter, Pink costume Finish Nepal Time Trial
Winter, Pink No Coat costume Finish Peru Time Trial
Winter. No coat costume Finish Kazakhstan-Project Carbonek

Hold LT: and press A, RT, Y, RT, X, LB Bulletproof
While holding LT, press: X-B-A-LB-RT-Y Draw Enemy Health
Hold LB: and press A, B, A, LT, X, Y Infinite Assault Rifle Ammo
Hold LB: and press LT, Y, RT, B, LT, X Infinite Grenade Launcher Ammo
Hold LB: and press RT, B, X, LT, X, A Infinite Shotgun Ammo
Hold LB: and press B, Y, LT, RT, A, B Infinite SMG Ammo
in game, Hold LT then press Y + A + Y +X + LB + B One Shot Kill
While holding LT, press: LB-A-B-A-Y-RT Textureless Mode
Hold LB: and press Y, A, B, RT, Y, LT Wield Excalibur
Hold LB: and press A, RT, B, RT, LT, X Wield Soul Reaver