Tom Clancy's Ghost Recon Cheats (Xbox)

To be able to enable cheats you must first
  finish all objectives in single mission doossiers.
  
In the Main Menu go into Dossier* and then go to
  View Dossier, there's a list of Objectives that can be done to Unlock
  Characters, Weapons, Game Types, Cheats.  Most of them are pretty
  hard but it can be done.  Tips: If your doing one of them where
  your by yourself clear out a group of guys, Save it and continue, if
  you die then you can load it from you last save, this really helps,
  just don't save it if you get hurt.
  
Big Heads
  
During gameplay HOLD BACK and press A, X, B, Y,
  A . A message will confirm correct code entry.
  
Invincibility
  
During gameplay HOLD BACK and press X, X, A, B, 
  A . A message will confirm correct code entry.

  

  Chicken Heads
  
During gameplay HOLD BACK and press X, X, Y, A,
  B . A message will confirm correct code entry.

  

  Flat Characters
  
During gameplay HOLD BACK and press B, A, X, Y,
  A . A message will confirm correct code entry.

  
  Helium Mode
  
During gameplay HOLD BACK and press X, A, Y, B,
  X . A message will confirm correct code entry.

  

  Hit A High Note
  
During gameplay HOLD BACK and press X, A, Y, B,
  X . A message will confirm correct code entry.

  Slow Motion
  
During gameplay HOLD BACK and press Y, Y, B, X,
  A . A message will confirm correct code entry.

  

  New Character

  Finish the game once and unlock a new character has infinite rocket
  ammo.
  
  

  
Secret people

  To unlock people with better ratings, beat the X, or bonus objective
  in each campaign level.
  
  

      
      Medals Awarded
  
  

    
Purple Heart: Get wounded or killed in
      action.
    
Bronze Star: Get 15 kills
    
Silver Star: Get 20 kills
    
Distinguished Service Cross: Get 25 kills
    
Congressional Medal Of Honor: Get 30 kills
  
  


  

Here are the requirements for getting each of the game's medals:

  Purple Heart: Killed or wounded in action. 
  Bronze Star: 15 kills 
  Silver Star: 20 kills 
  Distinguished Service Cross: 25 kills 
  Congressional Medal of Honor: 30 kills

During gameplay, hold back and press 2(X), Y, A, B.

During gameplay, hold back and press 2(X), A, B, A.

During gameplay, hold back and press B, A, 2(Y), B, A, 3(X).

During gameplay, hold back and press 2(B), Y, 2(X), A.

During gameplay, hold back and press X, A, Y, B, X.

During gameplay, hold back and press 2(Y), B, X, A.

During gameplay, hold back and press A, X, B, Y, A.

During gameplay, hold back and press B, A, X, Y, A.