This sleek weapon which is a favourite of US Navy SEALs is unlocked by going to the 'Main' menu and keeping the Right Bumper held down as you press Up, Y, Down, A, Left, X, Right, B, Left, Left, Y.

During gameplay bring up the 'Pause' menu and hold the Right shoulder button and enter the code for the mode you want.

Unlock GI John Doe Mode:
Press the Left thumbstick(2), A, Right thumbstick(2), B, Left thumbstick(2), X, Right thumbstick(2), Y.

Unlock 3rd View Mode:
Press X, B, X, B, Left thumbstick(2), Y, A, Y, A, Right Thumbstick(2).

Unlock Super Ragdoll Mode:
Press A(2), B(2), X(2), Y(2), A, B, X, Y.

Complete the tasks to get the GamerScore.

That Wasn't So Hard - GamerScore 5:
In Co-Op Story mode on any difficulty setting complete a scene as Bishop's teammate, Knight.

The Ace Always Wins - GamerScore 5:
Win your first ranked match Online.

Novice Hunter - GamerScore 5:
On any difficulty setting complete your first Terrorist Hunt mission.

Haute Couture - GamerScore 10:
Create your own custom camouflage.

Double or Nothin' - GamerScore 10:
Win 2 ranked matches in a row.

Cluster Bomb - GamerScore 10:
With at least 6 players present kill 3 enemies at once using explosives.

Pointman - GamerScore 10:
With at least 6 players present kill 50 enemies in multiplayer adversarial.

Covert Ops Specialist - GamerScore 10:
With at least 6 players present extract the intel item 10 times.

Private First Class - GamerScore 10:
Reach the rank of Private First Class.

Gimme a High Five! - GamerScore 10:
In Co-Op story mode on any difficulty setting complete 5 scenes as Bishop's teammate, Knight.

My Hero! - GamerScore 10:
With at least 6 players present rescue both hostages 10 times in Attack & Defend.

Kamikaze - GamerScore 10:
With at least 6 players present plant and detonate 10 bombs in Attack & Defend.

Demo Expert - GamerScore 10:
With at least 6 players present defuse 10 bombs in Attack & Defend.

Bring it on! - GamerScore 10:
Complete a Terrorist Hunt mission on the hardest difficulty setting.

The House Always Wins - GamerScore 15:
With at least 6 players present host and win 10 matches.

Natural Leader - GamerScore 15:
With at least 6 players present lead your team to Victory 20 times in Team Leader.

Short Controlled Bursts - GamerScore 15:
With at least 6 players present kill 100 enemies using an Assault Rifle.

Spray and Pray - GamerScore 15:
With at least 6 players present kill 100 enemies using a Sub-Machine Gun.

Come Closer - GamerScore 20:
With at least 6 players present kill 100 enemies using a shotgun.

Ace of Spades - GamerScore 15:
In an adversarial match without respawns perform 5 consecutive kills without dying.

Three of a Kind - GamerScore 15:
Win 3 consecutive ranked matches in a row.

Here's for a Wicked Five! - GamerScore 20:
In co-Op Story mode on any difficulty setting complete 10 scenes as Bishop's teammate, Knight.

Triggerman - GamerScore 20:
With at least 6 players present kill 150 enemies in multiplayer adversarial.

True Identity - GamerScore 20:
Use the Xbox Live Vision to create a character with your appearance.

Veteran Hunter - GamerScore 20:
On any difficulty setting complete 5 Terrorist Hunt missions.

Rappel King - GamerScore 20:
While suspended from a rope Kill 25 enemies.

Come Closer - GamerScore 20:
With at least 6 players present kill 100 enemies using a shotgun.

Machine Gunner - GamerScore 20:
With at least 6 players present kill 100 enemies using a Light Machine Gun.

Sidearm Frenzy - GamerScore 25:
With at least 6 players present kill 100 enemies using a Pistol.

Gun Shark - GamerScore 25:
With at least 6 players present kill 300 enemies in multiplayer adversarial.

Completed Convention Center - GamerScore 25:
On any difficulty setting in Story mode complete Convention Center.

Completed Estate - GamerScore 25:
On any difficulty setting in Story mode complete Estate.

Completed Nevada Desert - GamerScore 25:
On any difficulty setting in Story mode complete Nevada Desert.

Completed Old Vegas - GamerScore 25:
On any difficulty setting in Story mode complete Old Vegas.

Completed Pic des Pyrénées - GamerScore 25:
On any difficulty setting in Story mode complete Pic des Pyrénées.

Completed Recreational Center - GamerScore 25:
On any difficulty setting in Story mode complete Recreational Center.

Completed Theater - GamerScore 25:
On any difficulty setting in Story mode complete Theater.

I Like the Sound it Makes - GamerScore 25:
Using a Shotgun kill 150 terrorists.

My Name is Sam - GamerScore 25:
Using a Sound Suppressor neutralize 5 terrorists in a row by performing headshots.

Officer - GamerScore 30:
Reach the rank of Officer.

Weapon Collector - GamerScore 30:
Unlock every weapon in the game.

Royal Flush - GamerScore 30:
With at least 6 players present win 100 adversarial matches.

One Shot, One Kill - GamerScore 30:
With at least 6 players present kill 100 enemies using a Sniper Rifle.

Eye of the Sniper - GamerScore 30:
With at least 6 players present kill 500 enemies in multiplayer adversarial.

Don't Mess With Me - GamerScore 45:
With at least 6 players present kill 1,000 enemies in multiplayer adversarial.

Elite - GamerScore 50:
Reach the rank of Elite

Extreme Hunter - GamerScore 50:
On Realistic difficulty setting complete ALL Terrorist Hunt missions.

Freedom Shall Prevail - GamerScore 75:
On Realistic difficulty setting complete Story mode.

At the 'Main' menu of 'Rainbow Six: Vegas 2' select 'Extras' followed by the 'Comcast Gift' option and when you are prompted enter the code 'Comcast Faster' (without the quotes) to unlock a new bonus multi-player map.

This Israeli built assault rifle which stands for 'Tavor Assault Rifle - 21st Century' is unlocked When you are customizing your characters guns and clothes by holding RB and pressing Down, Down, Up, Up, X, B, X, B, Y, Up, Up, Y.