Complete the following tasks to unlock Apple Game Center achievements.

Achievement	How to unlock
A Mile A Minute (80 points)	Earn 60 Gold Stars.
Endurance Master (100 points)	Reach 300 Waves in an Endurance Level.
Millionaire!! (80 points)	Score 1,000,000 points in any Doorbuster level.
Obsessed! (100 points)	Earn 90 Gold Stars.
One for the Road (10 points)	Earn One Gold Star.
Over the Hill (60 points)	Earn 30 Golds Star.
Patience (25 points)	Reach 100 Waves in an Endurance Level.
Tenacious (50 points)	Reach 200 Waves in an Endurance Level.
The Perfect Ten (30 points)	Earn 10 Gold Stars.