Complete the indicated task to unlock the achievement.

Achievement	How to unlock
1,000,000 Points	Earn one Million Points.
100,000 Points	Earn 100,000 Points.
2,000,000 Points	Earn two Million Points.
500,000 Points	Earn 500,000 Points.
Complete Level 10	Complete Level 10.
Complete Level 20	Complete Level 20.
Complete Level 30	Complete Level 30.
Complete Level 40	Complete Level 40.
Destroy 10 UFOs	Destroy 10 UFOs.
Destroy 100 UFOs	Destroy 100 UFOs.
Destroy 1000 UFOs	Destroy 1000 UFOs.
Destroy 500 UFOs	Destroy 500 UFOs.
Game Complete	Complete All 50 Levels.