Thank the maker! Trophy
Thank the maker!
Unlock your first secret from the Extras menu
The Extras menu contains trailers, artwork, and concept art. Most of the items are unlocked by completing various levels. One is unlocked by finding all of the jetpacks. You also unlock a secret by watching all of the credits. You should unlock most, if not all, of these by the time you get the Platinum trophy. However, you only need to unlock one for the trophy.