Rainbow Six Vegas Cheats

Cheat Codes
While in game, open the pause menu, hold the left shoulder button and enter the following code (single player only):

B, X, A, Y, Left, Y, A, X, B, Right - All characters have big head
Left, Left, A, Right, Right, B, Left, Left, X, Right, Right, Y - Change bullet tracers color
Left, Right, Left, Right, A, B, Left, Right, Left, Right, X, Y - Characters are kill we only one shot
A, A, B, B, X, X, Y, Y, A, B, X, Y - Increase ragdoll strength
X, B, X, B, Left, Left, Y, A, Y, A, Right, Right - Third person view

Unlock the M468 Assault Rifle
Must be done at the "Press Start" screen, while holding the RB button:

Up, Y, Down, A, Left, X, Right, B, Leftx2, Right, X - Unlock the M468 Assault Rifle.

Multiplayer Tracers
You can use this to turn on tracers via xbox live so long as you are the host of the game. LS is Left Stick RS is Right stick:

Press Start as host then hold LB, LS twice, A, RS twice, B, LS twice, X, RS twice, Y: Turns on multiplayer tracers Red for Red team Blue for Blue

Achievements
Do the following tasks to unlock the following achievements and their alloted gamerscore:

Basic Training (5): Achieve the rank of Private 1st Class
Best of the Best (40): Achieve the rank of Elite
Bomb Expert (15): Defuse the bomb within 2 minutes in Attack & Defend
Coop Hunt Novice (10): Complete a Cooperative T-Hunt mission with at least one other player
Coop Story Novice (10): Complete a Cooperative Story mission with at least one other player
Dam Buster (30): Completed Nevada Dam in single player Story Mode
Demolition Expert (20): Kill 50 players using Explosives only
Elite Hunter (75): Complete all maps in splitscreen T-Hunt at Realistic difficulty
Equipment Specialist (20): Used all Gadgets at least once in single player Story
Executioner (30): Kill 500 terrorists online or offline
Hazmat Specialist (15): Deposit the canister and kill an enemy canister carrier in the same Retrieval match
Hell Hound (30): Completed Dante's Casino in single player Story Mode
High Climber (30): Completed Vertigo Spire in single player Story Mode
High Roller (30): Completed Calypso Casino in single player Story Mode
Hostage Rescue (15): Rescue all hostages in an Attack & Defend mission in under 5 minutes
Infiltration Specialist (15): Recover the Intel in Attack & Defend within 2 minutes
Killer's Rampage (30): 10 consecutive player kills without dying
Killer's Spree (20): 5 consecutive player kills without dying
Lone Wolf (15): Most kills in a ranked online Sharpshooter match
Marksman (10): 100 total player kills in any adversarial mode
Master of Ceremonies (15): Host a 16-player match
Officer (20): Achieve the rank of Lieutenant 2nd Class
Pistoleer (25): Kill 150 terrorists using only a Pistol
Rainbow Six Legend (100): Complete the single player Story Mode at Realistic difficulty
Siege Specialist (15): Leading contributor of kills for the Defenders in a winning Attack & Defend ranked match
Sniper (15): 10 kills using a Sniper rifle in an online ranked match
Special Operations (50): Play all maps of every Adversarial game mode
Street Cleaner (30): Completed Downtown Vegas in single player Story Mode
Survivor (15): Be the only remaining player in a ranked online match of Survival
Team Champion (15): Most kills in a winning online ranked match of Team Sharpshooter
Team Survivalist (15): Most kills in a winning online ranked match of Team Survival
Tough Hombre (30): Completed Border Town in single player Story Mode
Tour of Duty (60): Cooperatively complete all Terrorist Hunt missions
True Identity (30): Used the Xbox Live Vision to create a character with your appearance
Vegas Champion (50): Cooperatively complete the Story Mode
Veteran Hunter (50): Complete all maps of splitscreen Terrorist Hunt on Normal difficulty