Unlockable Titles
     Complete the specified task to obtain the title.

Adventurer         Complete the Epilogue Tower
Dark Knight        Reach level 99 with Sabata
Gladiator          S-Rank all boss battles
Guardian           Max out the protection capabilities of all sheilds
Gun Master         Raise the level of all of Django's guns to 16
Hunt Master        Defeat one of every type of monster
Shooting Master    S-Rank every Laplace stage
Sol Gunner         Reach level 99 with Django
SP Agent           Clear all quests assigned by the guild
Sword Master       Raise the level of all of Sabata's weapons to 16
Treasure Master    Obtain all accessories
Wanderer           Clear the game on every difficulty

Unlock New Modes

Boss Rush          Go to Sheridan's Mansion on New Game+
Hard Mode          Defeat the Final Boss
New Game+          Defeat the Final Boss

Unlock Django and Sabata Gears
     You might have to go through back and forth a lot to get them but
it's worth it. Most of them are from the boss rush.

Blood-Sucker(Sabata only)    Using Sabata, beat Boss Rush in Gold class 
                             with the option "All" and get S-rank.
Day-Walker(Django only)      Using Django, beat Boss Rush in Platinum 
                             class with the option "All" and get S-rank.
Eclipse-eye(Sabata only)     Complete Epilogue tower from floors 81-90.
Eclipse-googles(Django only) Complete the Epilogue tower 
                             at the 91-100 floors.
Night-Stalker(Sabata only)   Using Sabata, beat Boss Rush in Platinum 
                             class with the option "All" and get S-rank.
Soul-Saver(Django only)      Using Django, beat Boss Rush in Gold class 
                             with the option "All" and get S-rank.

Use Boktai Games as Solar Sensors
     While  the  paraSOL weather system may control the climate of the
Lunar Knights world, you can directly affect the intensity of Sunlight
or  Moonlight  in  the  game by slotting one of the three Boktai games
into your Nintendo DS's GBA slot.

     When  you  start  your  game  with  Boktai  slotted,  you will be
prompted  to adjust the Solar Sensor. Afterwards, you will have one of
three  new  items  in  your Valuables section of the pause menu. These
three  different  Solar  Sensors  have  different effects depending on
which Boktai game is inserted in the GBA slot.

Solar Sensor Ver. 1          Insert "Boktai: The Sun is in Your Hand!" 
                             into the GBA slot of your DS.
Solar Sensor Ver. 2          Insert "Boktai 2: Solar Boy Django" 
                             into the GBA slot of your DS.
Solar Sensor Ver. 3          Insert "Shin Bokura no Taiyou: Gyakushuu no 
                             Sabata" into the GBA slot of your DS.