Clear the first stage.

Clear the third stage.

Clear the fifth stage.

Shoot down 100 invaders.

Shoot down 200 invaders.

Shoot down 300 invaders.

Shoot down a mothership.

Shoot down a mothership three times in one stage.

Shoot down a mothership six times in one stage.

Shoot down 15 motherships in one playthrough.

Earn an extra life by reaching 1500 points.

Earn a score of 5000.

Earn a score of 10000.

Shoot 10 invaders without moving or dying.

Shoot 25 invaders without moving or dying.

Shoot 40 invaders without moving or dying.

Reach and clear the fifth stage without dying.

Complete a stage defeating the invaders in red, yellow, green order.

Defeat 40 invaders on the first stage before they can move down once.

Clear a stage without dying or moving left.

Clear a stage without firing a bullet past the height of the mothership.