You must first get the power up that allows you to swing from purple lums. Then go back to the first level and enter the part where you have to climb. When you reach the top, swing by the lum and you will be able to get to the village. Here you can place crystals to unlock extra features in the game.
Globox Disc access, multiplayer
At the main menu, hold L + R and press B, B, B, B.
Hidden passage
Press A, B, X, Y, X, Y in Morb_20.
Kaleidoscope textures
Press Down, A, Down, B, A, Y, X, X.
Map bonus at end of each level
Before the "Access denied" message appears, press A, B, X, Y, X, Y.
Full life...