Destroy an enemy ship in level.

Destroy 5 enemy ships in level.

Destroy 10 enemy ships in level.

Destroy an enemy bullet.

Destroy an enemy ship with auto fire.

Destroy an enemy ship with multi shot.

Collect shield power up.

Collect combo of auto fire and multi shot power ups.

Destroy ships halfway through the level.

Defeat boss.

Complete a level by destroying all enemy ships and boss.