Bolivia: Silver statue
On the first rope in Bolivia, turn left to find the cave that has the silver reward.
Character profiles
Collect the indicated number of bronze rewards to unlock the corresponding character profile.
Alister Fletcher: 90%
Amanda Evert: 70%
Anaya Imanu: 30%
James Rutland: 50%
Lara Croft: 10%
Shogo Takamoto: 40%
Toru Nishimura: 40%
Unknown Entity: 100%
Winston Smith: 80%
Zip: 20%
Ghana: Gold statue
At the end of the level, when you stand on button that opens the timed door, do not enter that door. Instead, go to the under the door to find a golden statue.
Japan: Alternate costume
When you reach a room which has a hanging dragon in it, you will find a large red box. Throw it to the floor to break it. You will get a gold statue that gives you a new costume.
Kazakhstan: Project Carbonek Boss
After the creature is released, run around the dome. Turn the switches on by pressing Y. When you have pressed all the switches, four balls with come down from the ceiling. Get onto the magnetic gun in the middle of the room. Make the balls come to you by using the magnetic gun. This might take some time because the monster will keep knocking you of the gun. When you have all the balls pointing towards you, a chamber will open above your head and the sword fragment will appear. Get off the gun and point up towards the sword fragment and grapple it. When you have it, an intermission sequence will begin and the level will end.
Lara in bikini
To unlock the white and black swimsuits for Lara you must complete the game, find all the rewards (including the ones in Croft Manor) then complete the game again under the time trial difficulty. Complete Bolivia Redux in time trial mode. This will allow the use of the "One Shot Kill" cheat which will help significantly. Note: This will also unlock everything else in the game, including the pistol upgrades, another thirty costumes, and the "Wield Excalibur and "Wield Soul Reaver sword" cheats.
Legacy Of Kain reference
In Croft Manor, on the right-hand side of the main stairs is a portrait of Kain, as it appears in Legacy Of Kain: Defiance. Eidos, producer of Tomb Raider, also produces the Legacy of Kain series.
Object models
Collect all the silver rewards from a level to unlock all object models from that particular location.
Peru: Play soccer
At the beginning of the level, look to your right to see a soccer ball. You can shoot the ball around with Y. Hit it past the dummy in between the fences and for a goal.
Pistol upgrades
Collect the indicated number of silver and bronze rewards to unlock the corresponding pistol upgrade.
Increased magazine capacity: 25%
Increased accuracy: 50%
Increased damage: 75%
Unlockable Concept Art
Collect all Bronze rewards from the following levels to unlock the concept art
Unlockable - How to Unlock
Bolivia - Collect all bronze rewards from Bolivia
England - Collect all bronze rewards from England
Ghana - Collect all bronze rewards from Ghana
Japan - Collect all bronze rewards from Japan
Kazakhstan - Collect all bronze rewards from Kazahkstan
Nepal - Collect all bronze rewards from Nepal
Peru - Collect all bronze rewards from Peru
Special - Collect all bronze rewards from Croft Manor