For the unlockables below, you have to get the specified score or higher to get the unlockable. These high scores are for Thorn's Airship.
Unlockable How to Unlock
Early Footage Video 500,000
Deleted Scenes Videos 1,000,000
Alternate Costume - 40 Below 1,500,000
Airship Concept Video 2,000,000
End Concept Video 2,500,000
Cheat Set #6 3,000,000