Elebits

[final kaoss]

Challenge Mission mode
Collect the second pink Elebit to unlock Challenge Mission mode.

Eternal Mission mode
Collect all three pink Elebits to unlock Eternal Mission mode.

[final kaoss]

Score Attack mode
Collect the first pink Elebit to unlock Score Attack mode.

Unlocking levels and items in Level Editor
Get a "C" rank or better in a level to unlock it in the Level Editor. Get a "B" rank or better in a level to also unlock a set of items corresponding to that level.

[final kaoss]

Collecting the third Pink Elebit
To capture the third Pink Elebit, do the following:

Hidden Elements
Successfully complete the indicated task to unlock the corresponding hidden Element. To activate them, select the "Elebits Notes" option in Extras mode.

Elebits Unlockable: Missions

Challenge Mission: Grab the 2nd pink Elebit.
Eternal Mission: Grab 3 pink Elebits.
Score Attack: Grab the first pink Elebit.