Blow up 100 ships.
Blow up 500 ships.
Blow up 250 ships.
Blow up 1000 ships.
Blow up 2000 ships.
Reach the second zone.
Reach the third zone.
Destroy every rebel ship in a level.
Earn less than ¥¥1
Finish the game
Help Khadija complete her mission.
Protect the boss from Khadija's final gambit.
Blow up The Boss and Khadija. Not sure what you hoped to achieve with that.
Earn over ¥¥20000