Full Ammo:
At the Cheats Menu, hold L R then press B, B, Y, X, A, Y.

Achievements:
Complete the following achievements to unlock Xbox Live Gamerscore points.

Jump Training 5 points: Complete Jump Training.

Go Go Go 5 points: Get pushed out of the plane in any mission.

Greased Landing 5 points: Touch down with a greased landing.

Flared Landing 5 points: Touch down with a flared landing.

Death From Above 10 points: Kill an enemy with a melee kick.

Jump Master 25 points: Discover one skill drop location in each mission.

Master Parachutist 40 points: Discover all skill drop locations in the game.

Crack Shot 25 points: Get 10 headshots in a row.

Tick-tick-BOOM 20 points: Kill three enemies with a cooked grenade.

5-in-a-row 20 points: Earn a 5-in-a-row.

Homerun 10 points: Kill an enemy using sprint-melee.

Shoot to Kill 10 points: Kill an enemy while moving in iron sights.

In Yer Face 20 points: Kill an enemy by kicking a grenade at him.

Purple Heart 10 points: Recover full health after being in verge of death state.

Pop-n-Drop 5 points: Crouch-sprint between cover objects.

Weapon Handler 25 points: Fully upgrade one weapon.

Weapon Specialist 50 points: Fully upgrade five weapons.

Weapon Master 75 points: Fully upgrade all weapons.

Cheat Death 20 points: Complete any operation without dying.

Village of Adanti 15 points: Complete Operation Husky.

Paestum Ruins 20 points: Complete Operation Avalanche.

D-Day in Reverse 25 points: Complete Operation Neptune.

Nijmegen Bridge 30 points: Complete Operation Market Garden.

War Machine 35 points: Complete Operation Varsity.

Der Flakturm 40 points: Complete Der Flakturm.

Complete on Casual 25 points: Complete the game on Casual difficulty.

Complete on Normal 50 points: Complete the game on Normal difficulty.

Complete on Expert 75 points: Complete the game on Expert difficulty.

MP - Distinguished Service Cross 75 points: Get over 1,000 kills and 500 Objective Points in ranked matches.

MP - Distinguished Service Medal 25 points: Get over 500 kills and 250 Objective Points in ranked matches.

MP - Silver Star 0 points: Get over 20 first place finishes in ranked matches.

MP - American Campaign Medal 0 points: Be on the winning team for every map in ranked matches.

MP - Legion of Merit 20 points: Get over 10 Objective Points in a ranked match.

MP - Soldier's Medal 20 points: Get 20 kill assists throughout a career in ranked matches.

MP - Bronze Star 0 points: Get over 20 top three finishes in ranked matches.

MP - Purple Heart 10 points: Recover full health after being in verge of death state.

MP - World War II Victory Medal 0 points: Come in first place on every map in any game mode in ranked matches.

MP - EAM Campaign Medal 25 points: Play every map at least once in a ranked match.

MP - Good Conduct Medal 0 points: Play 20 consecutive ranked matches without getting a team kill.

MP - Presidential Unit Citation 30 points: Get 20 Team Points in a ranked match.

MP - Meritorious Unit Citation 20 points: Get 10 Team Points in a ranked match.

MP - Paratrooper's Badge 10 points: Kill an enemy with a melee kick.

MP - Combat Infantryman Badge 10 points: Kill an enemy player while he is parachuting.

MP - Pistol Whip 10 points: Kill an enemy with a pistol melee attack.

MP - Human Flak Gun 5 points: Kill an enemy player with a grenade while he is parachuting.

MP - Weapon Virtuoso 40 points: Upgrade all weapons in ranked matches.