Clear Level 1.

Clear Level 5.

Clear Level 10.

Clear Level 20.

Clear Level 30.

Recapture your fighter and play with two ships at once.

Score 10,000 points.

Score 50,000 points.

Clear a level before any enemies have a chance to descend.

Clear the first challenge (Level 3) with a perfect score.

Clear the second challenge (Level 7) with a perfect score.

Clear the third challenge (Level 11) with a perfect score.

Clear the fourth challenge (Level 15) with a perfect score.

Clear the fifth challenge (Level 19) with a perfect score.

Clear the sixth challenge (Level 23) with a perfect score.

Clear the seventh challenge (Level 27) with a perfect score.

Clear the eighth challenge (Level 31) with a perfect score.

Score 100,000 points.

Score 250,000 points.

Clear five consecutive levels using double fighters without losing it.

Score 30,000 points and receive an extra ship.

Have four ships in reserve at once.

Defeat a triple scorpion combo for 1000 points.

Clear the first level without firing any extra shots (no double fighters).

Clear Level 15.

Clear Level 30 on Expert difficulty.