Scramble

Destroy 30 enemies without using your forward shooting weapon.

Successfully destroy the enemy base.

-Unlock Complete Level 1
  Complete Level 1.

-Unlock Complete Level 2
  Complete Level 2.

-Unlock Complete Level 3
  Complete Level 3.

-Unlock Complete Level 4
  Complete Level 4.

-Unlock Complete Level 5
  Complete Level 5.

-Unlock Co-op Brilliance
  Obtain a score of 30,000 or more while playing an Xbox Live co-op game.

-Unlock It's a Mystery
  Destroy 3 or more mystery objects.

-Unlock Perfection
  Complete the entire game without losing any lives.

-Unlock Refueling
  Destroy 10 or more fuel containers on Level 1.

-Unlock Sharp Shooter
  Destroy 30 enemies without once dropping a bomb.