Complete a level without firing.
Complete the game on Normal.
Form a four-ship (Epic) formation.
Complete a level without taking damage.
Complete a level without dying or losing any allies.
Destroy all enemies in a level.
Finish Mission 3 on any difficulty.
Earn 30,000 points.
Score 10,000 points while attached in a level.
Complete the game on Insane.
Earn 100,000 points.
Earn 185,000 points.