Ghost Recon: Advanced Warfighter 2 Codes -

Cheat Mode
At the mission selection screen (or pause menu), hold + + , then enter one of the following codes by pressing the corresponding buttons:

x2, , , , - 100% health
x2, , , , - Infinite ammunition
x2, , , , - Team invincible
x2, , , , - Scott Mitchell invincible
, , , , - Unlock all Missions

FAMAS in Quick Mission Mode
When creating a new campaign, enter the following name when prompted to have access to the FAMAS when playing a Quick Mission:

GRAW2QUICKFAMAS

Achievements
Complete each of the following achievements below to get the allotted gamerscore:

Act 1 Complete (elevated risk) (30) - Complete campaign Act 1 in 'elevated risk'.
Act 1 Complete (guarded risk) (20) - Complete campaign Act 1 in 'guarded risk' or higher.
Act 1 Complete (low risk) (10) - Complete campaign Act 1 in 'low risk' or higher.
Act 2 Complete (elevated risk) (35) - Complete campaign Act 2 in 'elevated risk'.
Act 2 Complete (guarded risk) (25) - Complete campaign Act 2 in 'guarded risk' or higher.
Act 2 Complete (low risk) (15) - Complete campaign Act 2 in 'low risk' or higher.
Act 3 Complete (elevated risk) (40) - Complete campaign Act 3 in 'elevated risk'.
Act 3 Complete (guarded risk) (30) - Complete campaign Act 3 in 'guarded risk' or higher.
Act 3 Complete (low risk) (20) - Complete campaign Act 3 in 'low risk' or higher.
Bull's eye (Quick mission) (30) - Finish a mission with a 100% accuracy statistic.
Caldera (Co-op 4) Perfect (20) - Complete Co-op Campaign Mission without failing an objective, no respawns, on default or hard.
Challenge 1 Complete (10) - Complete the first tutorial challenge with the highest appreciation.
Challenge 2 Complete (10) - Complete the second tutorial challenge with the highest appreciation.
Challenge 3 Complete (10) - Complete the third tutorial challenge with the highest appreciation.
Challenge 4 Complete (10) - Complete the fourth tutorial challenge with the highest appreciation.
Co-op Veteran (25) - Win 30 Co-op matches with at least 5 gamertags in the room.
Combat Medic (25) - Heal 10 teammates wounded by enemy fire in a multiplayer match with at least 5 gamertags in the room.
Dangerous (15) - Get a total of 150 kills in Team or Solo matches with at least 5 gamertags in the room.
Demo Expert (20) - Plant 10 demo charges in Team Mission matches with at least 5 gamertags in the room.
Enforcer (20) - Eliminate 5 different human opponents in 30 seconds with at least 10 gamertags in the room.
Hawk's eye (Quick mission) (30) - Finish a mission with all your intels acquired while out of combat.
Helo Hunter (20) - Shoot down 20 helicopters in the Helicopter Hunt game type.
Hideout (Co-op 6) - Perfect (20) - Complete Co-op Campaign Mission without failing an objective, no respawns, on default or hard.
Iron man (Quick mission) (30) - Finish a mission without being hit.
Lethal (20) - Get a total of 300 kills in Team or Solo matches with at least 5 gamertags in the room.
Locks (Co-op 3) - Perfect (20) - Complete Co-op Campaign Mission without failing an objective, no respawns, on default or hard.
Mission accomplished (30) - Complete all the secondary objectives in 'Campaign mode' or in 'Quick Mission mode'.
Outpost (Co-op 5) - Perfect (20) - Complete Co-op Campaign Mission without failing an objective, no respawns, on default or hard.
Perfect Co-op Campaign (40) - Complete all Co-op Campaign Missions without failing an objective, no respawns, on default or hard.
Predator (Quick mission) (30) - Finish a mission with all fights engaged by you.
Ruthless (25) - Get a total of 500 kills in Team or Solo matches with at least 5 gamertags in the room.
Single Player Master (50) - Unlock all other 'Single player mode' achievements to unlock the 'Single player Master' achievement.
Sniper Expert (20) - Get a total of 100 sniper rifle kills in Team or Solo matches with at least 5 gamertags in the room.
Solo Veteran (25) - Win 10 Solo matches with at least 5 gamertags in the room.
Station (Co-op 1) - Perfect (20) - Complete Co-op Campaign Mission without failing an objective, no respawns, on default or hard.
Team 'ELITE' (Quick mission) (30) - Finish a mission with no team mates wounded and +50% enemies killed by them.
Team All-Star (35) - Lead your team in kills in 10 Team matches with at least 5 gamertags on your team.
Team MVP (15) - Lead your team in kills in a Team match with at least 5 gamertags on your team.
Team Veteran (25) - Win 30 Team matches with at least 5 gamertags in the room.
The Cut (Co-op 2) - Perfect (20) - Complete Co-op Campaign Mission without failing an objective, no respawns, on default or hard.
Threatening (10) - Get a total of 50 kills in Team or Solo matches with at least 5 gamertags in the room.
Tutorial Walkthrough (5) - Complete the whole tutorial at least once.
Ultimate Defender (40) - Win a 60 minute Co-op Defend match on any map.

The Co-op collection is available on xbox live marketplace and when downloaded allows you to earn an additional 125 gamerscore through these new achievements:

From Downtown (10) - Kill exactly 3 enemies and no teammates with one grenade on a map.
Clever Retort (10) - In a match, get a grenade kill while you are incapacitated or dead. Minimum 5 players.
Caves (Co-op) Perfect (15) - Complete Caves Co-op Mission without respawning at default or hard difficulty.
Kickin' it old school (15) - Complete a Co-op Mission without respawning, hard difficulty, and the Drone off.
2-Point Swing (15) - In a CTF match with 5+ players, recover your stolen flag and score in a single run.
Battlefield (Co-op) Perfect (15) - Complete Battlefield Co-op Mission without respawning at default or hard difficulty.
RR Bridge (Co-op) Perfect (15) - Complete Railroad Bridge Co-op Mission without respawning at default or hard difficulty.
Plantation (Co-op) Perfect (15) - Complete Plantation Co-op Mission without respawning at default or hard difficulty.
Swamp Airfield (Co-op) Perfect (15) - Complete Swamp Airfield Co-op Mission without respawning at default or hard difficulty.

The Co-op Collection 2 is available on xbox live marketplace and when downloaded allows you to earn an additional 125 gamerscore through these new achievements:

Bridges (Co-op) Perfect (15): Complete Bridges Co-op Mission without respawns at default or hard difficulty.
Pistoleer (20): Kill 6 or more enemies with a pistol in a single match on a Co-op Collection Pack 2 map. Minimum 5 players.
Riverbed (Co-op) Perfect (15): Complete Riverbed co-op mission without respawns at default or hard difficulty.
Color Guard (15): Kill 3 enemies while you carry a flag in a CTF match on a Co-op Collection Pack 2 map. Minimum 5 players.
Depot (Co-op) Perfect (15): Complete Depot co-op mission without respawns at default or hard difficulty.
Stronghold (Co-op) Perfect (15): Complete Stronghold co-op mission without respawns at default or hard difficulty.
Ghost Town (Co-op) Perfect (15): Complete Ghost Town co-op mission without respawns at default or hard difficulty.
Untouchable (15): Survive 10 mins, killing at least 3 enemies in that time, on a Co-op Collection Pack 2 map. Minimum 5 players.

New Head Gear
2 New Head Gear - Have a save file from Splinter Cell: Double Agent on your hard drive.
2 New Head Gear - Have a save file from Rainbow Six: Vegas on your hard drive.