If You complete the indicated task You'll get the allotted gamerscore.
Legendary Commander (30) - Win any game with 3 or more Victory Conditions simultaneously.
Panzer General (25) - Destroy 12 or more units in a single game.
Fifty Mission Crush (20) - Win a total of 50 Multiplayer games on Xbox LIVE.
Artillery Commander (20) - Use 4 or more artillery units in support of a single combat in one game.
Air Commander (15) - Play 6 or more "Air" cards in one game.
Bronze Star (15) - Win a total of 15 Multiplayer games on Xbox LIVE.
Iron Cross (15) - Have a single unit be promoted 3 times by victory during combat in one game.
Silver Star (15) - Destroy a unit with 6 or more health in one combat.
Training Ribbon (15) - Win your first Multiplayer game on Xbox LIVE.
Battle of the Bulge Ribbon (10) - Successfully complete the entire Campaign.
D-Day Ribbon (10) - Successfully complete the Campaign Mission One, Utah Beach.
Normandy Ribbon (10) - Successfully complete the first six Campaign missions.