Successfully destroy the enemy base.
Complete Level 2.
Complete the entire game without losing any lives.
Destroy 30 enemies without once dropping a bomb.
Destroy 10 or more fuel containers on Level 1.
Complete Level 1.
Destroy 3 or more mystery objects.
Complete Level 3.
Complete Level 5.
Destroy 30 enemies without using your forward shooting weapon.
Complete Level 4.
Obtain a score of 30,000 or more while playing an Xbox Live co-op game.