Level select:
————-
Successfully complete the game under the Insane difficulty setting.
Achievements:
————-
Complete the following achievements to unlock Xbox Live Gamerscore points.
Rookie (5 points) : Earn 30, 000 points.
Veteran (10 points) : Earn 100, 000 points.
Ace (20 points) : Earn 185, 000 points.
Exterminator (15 points): Destroy all enemies in a level.
Untouchable (15 points) : Complete a level without taking damage.
Immortal (15 points) : Complete a level without dying or losing any allies.
Diplomat (15 points) : Complete a level without firing.
Halfway Point (5 points): Finish Mission 3 on any difficulty.
Epic Warrior (10 points): Form a four-ship (Epic) formation.
Teamwork (15 points) : Score 10, 000 points while attached in a level.
Hero (25 points) : Complete the game on Normal.
Legend (50 points) : Complete the game on Insane.
