New Mission Modes
     You can unlock extra modes for every non-boss stage

Unlockable              How to Unlock
Challenge Mission       Collect the 2nd pink Elebit
Eternal Mission         Collect all 3 pink Elebits
Score Attack            Collect the 1st pink Elebit

Unlock a level in level editor
     In  order to unlock a level in level editor, you must rank a C or
higher  in  it.  If  you  rank  a  B or higher, you get a set of items
corresponding to that level that can be used in any place.

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

Aroma Unit: 
     Get the "King of Surveillance" rank after defeating the final 
Boss.

Berserk Elebits: 
     Get the "King of Capture" rank after defeating the final Boss.

Extreme Silence: 
     Get the "King of Noise" rank after defeating the final Boss.

High Power Mode: 
     Defeat  the  third Boss, then watch the intermission sequence for
the next level.

Limit Release: 
     Complete 25 Challenge missions.

Main Unit Only: 
     Complete 5 Challenge missions.

Permanent Homing Laser: 
     Complete  20  Challenge  missions. 
Note: This cannot be used with Permanent Vacuum Laser.

Permanent Vacuum Laser: 
     Earn 25 "S" ranks in Normal Mission mode.
Note: This cannot be used with Permanent Homing Laser.