Complete the indicated task to unlock the achievement.

Achievement	How to unlock
E.T. Bilu	Defeat the first boss.
Epic score	Get 10.000 score in Infinite Mode.
First Kill	Defeat your first enemy.
Good score	Get 5.000 score in Infinite Mode.
Legendary Score	Get 15.000 score in Infinite Mode.
Like a Boss	Defeat twenty bosses in the same Infinite Mode match.
Low score	Get 1.000 score in Infinite Mode.
Shadow Ship	Defeat the second boss.
Space Destroyer	Complete level 25 of Adventure Mode.
Take my money!!	Spend 20.000 crystals in the store.
The Big Eye	Defeat the fourth boss.
The Commander	Defeat the fifth boss.
Third Boss	Defeat the third boss.