Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Big Red Button (10 points): Use your first Nuke.
Supaweapon! (10 points): Collect components to complete a Megalaser.
Joint Command (10 points): Stand together with another player to complete one mission.
ComSat Uplink (10 points): Play over Xbox Live with three other players for at least one minute.
World Tour (15 points): Complete the first nine missions.
Stockpile (15 points): Get 5,000,000 points.
Cockroad of Freedom (15 points): Withstand eight minutes of the Red Star onslaught in any Survival game.
Cannon Happy (20 points): Complete 11 missions without Nukes of reinforcements.
Ultimate Tanker (25 points): Finish Mission mode.
Freedom's Last Stand (25 points): Defeat all 19 Red Star champions in Boss Blitz mode.
Champion of Freedom (25 points): Survive 12 minutes of the enemy's attack in any Survival game.
Massive Destruction (20 points): Destroy 12 enemies with a single Nuke.