Reach stage one.

Reach stage two.

Reach stage three.

Reach stage four.

Reach stage five.

Reach stage six.

Clear all stage.

Destroy first secret enemy.

Destroy second secret enemy.

Destroy third secret enemy.

Destroy rival.

Destroy the rival for the fourth encounting.

Destroy the rival for the fourth time.

Clear the game at 100%.

Overlooking the migrant ships.

Clear the game without losing any ship.

Clear without using missiles.

Clear without W.M.D.

Clear easy level with at least 60%.

Clear normal level with at least 60%.

Clear hard level with at least 60%.

Clear nightmare level with at least 60%.