Complete the following tasks to unlock Apple Game Center achievements.

Achievement	How to unlock
079! (50 points)	Killing 2079 enemies in one game!
Going action! (5 points)	Try action mode.
Going strong (20 points)	Get 10000 points.
Going traditional... (5 points)	Try traditional mode.
Shh... It's a secret! (50 points)	Find that secret cube mode.
That one million mark (200 points)	Get one million points.