Tomb Raider: Legend - Lara39s Many Outfits

Hold Backspace and press 7 button - Bulletproof Lara
Hold Backspace and press 3 button - Unlimited Assault Rifle ammunition
Hold Backspace and press 4 button - Unlimited Grenade Launcher ammunition
Hold Backspace and press 5 button - Unlimited Shotgun ammunition
Hold Backspace and press 6 button - Unlimited SMG ammunition
Hold Backspace and press 8 button - One Shot Kill
Hold Backspace and press 2 button - Show Enemy Health
Hold Backspace and press 1 button - Disable textures
Hold Backspace and press 9 button - Wield Excalibur
Hold Backspace and press 0 button - Wield Soul Reaver

Note: First, you must have the cheats unlocked in your extras menu.

Lara's Many Outfits:
To collect Lara's wardrobe of outfits, you need to collect and conquer special circumstances.

Amanda Ritual Outfit - Complete Ghana Time Trial
Amanda Winter Outfit - Complete Kazhkastan Time Trial
Biker - Finish England Level
Biker without Jacket - 100 Silver and Gold in England
Black Legend - 100 Silver in Croft Manor
Blue Legend - 100 Silver in Peru
Catsuit - 100 Gold in Japan
Classic outfit - 100 Gold in Peru
Cream Suit - 100 Silver and Gold in Croft Manor
Goth - Complete England Time Trial
Gray Classic - 100 Gold in Ghana
Green Sport Outfit - Complete Bolivia Time Trial
Lace Shirt Goth - Complete Japan Time Trial
Legend - Unlockable from the start of the game
Pink Legend - 100 Silver in Ghana
Pink Winter - Complete Nepal Time Trial
Pink Winter, No coat - Complete Peru Time Trial
Red Jacket Biker - 100 Silver in England
Ripped Evening dress - Finish Japan Level
Ripped Red Evening Dress - 100 Silver in Japan
Snowsuit - 100 Gold in Nepal
Special Forces - 100 Gold in Kazakhstan
Special Forces Urban - 100 Gold in England
Sport Outfit - 100 Gold in Bolivia
Suit - 100 Gold in Croft Manor
Union Jack Legend - 100 Silver in Bolivia
White Bikini Croft Manor - Complete all Time Trials and beat the game
Winer, Orange No coat - 100 Silver in Kazhkstan
Winter outift - Finish Kazakhstan Level
Winter, No coat - Finish Kazkhstan Level
Winter, Orange - 100 Silver in Nepal
Black Bikini Croft Manor - 100 Bronze, Silver and Gold in all Levels, beat Time Trials and Complete the game

Pistol Upgrades:
To get these Pistol upgrades you need to obtain a certain amount of Reward items in levels

Extra damage - 75 Bronze and Silver
Increased Accuracy - 50 Bronze and Silver
Increased magazine size 40 bullets - 25 Bronze and Silver

Location Concepts:
By collecting all the Bronze rewards in Levels, you get the location concept. This includes many different sketches of the level's creaction.

Bolivia - 100 Bronze in Bolivia
England - 100 Bronze in England
Ghana - 100 Bronze in Ghana
Japan - 100 Bronze in Japan
Kazakhstan - 100 Bronze in Kazakhstan
Nepal - 100 Bronze in Nepal
Peru - 100 Bronze in Peru
Special - 100 Bronze in Croft Manor

Unlockable Cheats:
To obtain cheats in the game, you must complete certain Time Trials in Levels mins:sec

Bulletproof Lara - Complete England in less than 27:00
Draw Enemy Health - Complete Bolivia in less than 12:30
Infinite Assault Rifle Ammo - Complete Japan in less than 12:15
Infinite Grenade Launcher ammo - Complete Kazakhstan in less than 27:10
Infinite Shotgun ammo - Complete Ghana in less than 20:00
Infinite SMG ammo - Complete Peru in less than 21:30
One Shot kill - Complete Bolivia Redux in less than 4:15
Wield Excalibur - Complete Nepal in less than 13:40
Wield Soul Reaver - Complete Game and all time trials

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.

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

Lara Croft - Collect 10
Zip - Collect 20
Anaya Imanu - Collect 30
Shogo Takamoto - Collect 40
Toru Nishimura - Collect 40
James Rutland - Collect 50
Amanda Evert - Collect 70
Winston Smith - Collect 80
Alister Fletcher - Collect 90
Unknown Entity - Collect 100

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.