Destroy any of the robot factory.

Catch any yellow bonus.

Catch the bonus with the name of the "Meteorite shower".

Look into the About dialog.

Get any of these bonuses: MG, Laser or Cannon.

Apply any upgrade to the paddle.

Successfully complete any flying level.

Defeat any boss.

Accumulate three reflectors at a time.

Complete any level with two bosses.

Finish both themes of the game.

Go through at least one level of both themes.

Reach a score of 175000 points.