Unlock Microsoft Gamerscore points, by completing the following Achievements.

Achievement	How to unlock
APPRENTICE REVOLUTIONARY ( 10 points )	Get to Level 5 in the Revolution Mode.
BARELY MADE IT! ( 10 points )	Clear attack time with less than 4 seconds remaining on the clock.
BLUE-COLLAR MILLIONAIRE ( 10 points )	Get 1,000,000 in Revolution Mode.
BONUS CHAMPION ( 10 points )	Complete 100 bonus levels in Revolution Mode.
BOSS BREAKER JR. ( 10 points )	Destroy 1 Boss in the Revolution Mode.
BOSS BREAKER PRO ( 10 points )	Destroy 50 Bosses in the Revolution Mode.
BRICK BASHER ( 10 points )	Break 5,000 basic bricks.
DR. STRANGELOVE ( 10 points )	Nuke 50 times.
EXTREME BOSS BREAKER ( 10 points )	Destroy 300 Bosses in the Revolution Mode.
IMMORTAL ( 10 points )	Get 100 extra lives.
KNOW YOUR PLACE, ROBOT ( 10 points )	Complete Classic Mode.
LOSE-A-LIFE AWARD ( 10 points )	Lose 50 lives.
MASTER CLASSICIST ( 10 points )	Complete 30 levels in Classic Mode.
MIGHTY LABORER ( 10 points )	Get 500,000 in Revolution Mode.
SCORE MILLIONAIRE ( 10 points )	Get 1,000,000 points in the Classic Mode.
SCORE SCAVENGER ( 10 points )	Get 100,000 points in the Classic Mode.
STONECUTTER ( 10 points )	Break 1,000 rock bricks.
SUPER BOSS BREAKER ( 10 points )	Destroy 200 Bosses in the Revolution Mode.
VETERAN BOSS BREAKER ( 10 points )	Destroy 100 Bosses in the Revolution Mode.
VIRTUAL BLACKSMITH ( 10 points )	Break 500 metal bricks.