Bitter Difficulty 
     Complete  the  game  and after watching the whole credits you can
make a new save. After that you can select the Bitter difficulty along
with your old equipment.

Unlockable:              How to Unlock:
Bitter                   Complete the game on Sweet or Mild 


Unlock "Pure White Giant Glastonbury"
     To  unlock  the minigame "Pure White Giant Glastonbury", beat the
Rank  04  battle. To play it, go back to the motel and select your TV.
The game can be played from there.


"Real" Ending
     To  see  the true ending, complete the game with all beam katanas
obtained.  If  you do not have them all by the end of the game, choose
to  return  to Santa Destroy, obtain them, and return to a bathroom to
view it.

Unlockable Shirt 00
     Beat the game and you will unlock a new shirt.

Unlockable:         How to Unlock:
Shirt 00            Beat the Game