The following features can be enabled in the game when the indicated task has been completed.
Unlock Difficulty 4:
Beat Time Attack mode with anyone.
Unlock Attack Power 4:
Get 30 or more points and beat Survival mode with anyone.
Unlock Mission 13.5:
Beat Mission mode once.
Unlock Mission 20:
Using Rock Lee and Neji Hyuga beat Single-Player.
Unlock Mission 21:
Beat mission 20.
Unlock Mission 22:
Beat mission 21 (one of the steps for Inachi).
Unlock Mission 23 (Final mission):
Beat mission 22.
Added by: Sanzano Jan 8th 2008, ID#1019