Gears of War 2 Cheats

Wile you are figthing do this to win faster

Successfully complete the indicated task to unlock the corresponding skin in Multiplayer mode.

Ok, so start your game. Put it on the hardest mission and difficulty and beat it 3 times. After that, restart the game but this time press every button on your Xbox 360 controller 10 times in 20 seconds, right when you start your new game. Then, you sort of hack the game's script due to an unknown glitch. Now, you are going to have to press the correct buttons to get infinite ammo. See below...

To unlock the Flame Grenadier for use in multiplayer, complete Act 4 in single-player mode on any difficulty.

To unlock the Insane Difficulty level, complete the game once through on any difficulty setting previously available

To unlock RAAM for use in multiplayer, have the “A Dish Best Served Cold” achievement on your hard drive from the original Gears of War.

To unlock Dizzy Wallin for use in multiplayer, complete Act 1 in single-player mode on any difficulty.

To unlock Tai Kaliso for use in multiplayer, complete Act 3 in single-player mode on any difficulty.

To unlock Lt. Minh Young Kim for use in multiplayer, have the “Time to Remember” achievement on your hard drive from the original Gears of War.

Successfully complete the indicated task to unlock the corresponding skin in Multiplayer mode:

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
Green as Grass (10 points): Train the rook (any difficulty).
It's a Trap! (10 points): Story progression in Act 1, Chapter 2.
Escort Service (10 points): Story progression in Act 1, Chapter 4.
Girl About Town (10 points): Story progression in Act 1, Chapter 6.
That Sinking Feeling (10 points): Story progression in Act 2, Chapter 4.
Freebaird! (10 points): Story progression in Act 2, Chapter 5.
Heartbroken (10 points): Story progression in Act 2, Chapter 6.
Longitude and Attitude (10 points): Story progression in Act 3, Chapter 3.
Tanks for the Memories (10 points): Story progression in Act 3, Chapter 4.
Water Sports (10 points): Story progression in Act 3, Chapter 6.
There's a Time for Us (10 points): Story progression in Act 4, Chapter 2.
Better Wrapped in Beacon (10 points): Story progression in Act 4, Chapter 3.
Have Fun Storming the Castle (10 points): Story progression in Act 4, Chapter 6.
And the Horse You Rode in On (10 points): Story progression in Act 5, Chapter 1.
You Are the Support, Son (10 points): Story progression in Act 5, Chapter 2.
Brumak Rodeo (10 points): Story progression in Act 5, Chapter 4.
Does This Look Infected to You? (10 points): Story progression in Act 5, Chapter 5.
Tourist of Duty (25 points): Complete all campaign acts on Casual Difficulty.
Guerilla Tactician (50 points): Complete all campaign acts on Normal Difficulty.
Artist of War (75 points): Complete all campaign acts on Hardcore Difficulty.
Suicide Missionary (150 points): Complete all campaign acts on Insane Difficulty.
Collector (5 points): Recover 5 collectibles (any difficulty).
Pack Rat (15 points): Recover 20 collectibles (any difficulty).
Completionist (30 points): Recover all 41 collectibles (any difficulty).
One-Night Stand (10 points): Complete 1 chapter in co-op on any difficulty (Marcus or Dom).
Open Relationship (30 points): Complete 10 chapters in co-op on any difficulty (Marcus or Dom).
Friends with Benefits (50 points): Complete all acts in co-op on any difficulty (Marcus or Dom).
Once More, With Feeling (10 points): Perform 30 perfect active reloads (any mode).
Takes a Licking (30 points): Melee 30 Tickers (any mode).
Organ Grinder (10 points): Kill 30 enemies with a cover mounted Mulcher (any mode).
Shock and Awe (10 points): Kill 30 enemies with the heavy Mortar (any mode).
Said the Spider to the Fly (10 points): Kill 10 enemies with a planted grenade (any mode).
Crowd Control (10 points): Melee 10 enemies down with the Boomshield equipped (any mode).
Smells Like Victory (10 points): Kill 30 enemies with the Scorcher Flamethrower (any mode).
Variety Is the Spice of Death (30 points): Kill an enemy with every weapon in the game (any mode).
Seriously 2.0 (50 points): Kill 100,000 enemies (any mode).
Standing Here, Beside Myself (10 points): Win 3 matches of Wingman (public).
Beat the Meatflag (10 points): Capture 10 meatflags in Submission (public).
It's Good to be the King (10 points): Win 10 rounds of Guardian as the leader (public).
You Go Ahead, I'll Be Fine (10 points): Win three matches of King of the Hill (public).
Back to Basic (10 points): Successfully complete the 5 lessons of multiplayer Training Grounds.
Party Like It's 1999 (30 points): Play 1999 rounds of multiplayer (any mode).
Around the World, Again (30 points): Win a multiplayer match on each map (any mode).
Dirty, Dirty Horde (20 points): Survive the first 10 waves of Horde (any difficulty, any map).
Hoard the Horde (30 points): Survive all 50 waves of Horde (any difficulty, any map).
Crossed Swords (10 points): Win 10 chainsaw duels (any mode).
A Parting Gift (20 points): Kill 10 enemies with a grenade while down but not out (any mode).
Pound of Flesh (10 points): Use a meatshield to save your life 10 times (any mode).
Photojournalist (10 points): Submit a spectator photo.
Kick 'Em When They're Down (10 points): Perform all 11 unique executions on a downed enemy.