Solar Sensors:
Have the Game Boy Advance game Boktai: The Sun Is In Your Hand! in the cartridge slot to get “Solar Sensor Ver. 1” as an item in the “Valuables” menu. This Solar Sensor allows Aaron or Lucian to replenish their ENE at a faster rate based on sunlight and will charge the Solar Station.
Have the Game Boy Advance game Boktai 2: Solar Boy Django in the cartridge slot to get “Solar Sensor Ver. 2” as an item in the “Valuables” menu. This Solar Sensor allows Aaron or Lucian to replenish their ENE and LIFE at a faster rate based on sunlight and will charge the Solar Station.
Have the Game Boy Advance game Shin Bokura No Taiyou: Gyakushuu No Sabata in the cartridge slot to get “Solar Sensor Ver. 3” as an item in the “Valuables” menu. This Solar Sensor allows Aaron or Lucian to replenish their ENE and TRC at a faster rate based on sunlight and will charge the Solar Station.
Sound Data:
Have the Game Boy Advance game Boktai: The Sun Is In Your Hand! in the cartridge slot, then visit Bulldog’s shop in the Acuna Guild for 3,000 Soll to unlock the “Boktai” Sound Data.
Have the Game Boy Advance game Boktai 2: Solar Boy Django in the cartridge slot, then visit Bulldog’s shop in the Acuna Guild for 3,000 Soll to unlock the “Boktai 2/Zoktai” Sound Data.
Have the Game Boy Advance game Shin Bokura No Taiyou: Gyakushuu No Sabata in the cartridge slot, then visit Bulldog’s shop in the Acuna Guild for 3,000 Soll to unlock the “Shinbok” Sound Data.
Django Gears:
Unlock the following Django Gear by performing the corresponding tasks:
GEAR – HOW TO UNLOCK
Day-Walker – Beat Boss Rush mode with an “S” rank in the Platinum class with the option “All”.
Eclipse-Goggles – Beat the Epilogue Tower from floors 91 to 100.
Soul-Saver – Beat Boss Rush mode with an “S” rank in the Gold class with the option “All”.
Sabata Gears:
Unlock the following Sabata Gear by performing the corresponding tasks:
GEAR – HOW TO UNLOCK
Blood-Sucker – Beat Boss Rush mode with an “S” rank in the Gold class with the option “All”.
Night-Stalker – Beat Boss Rush mode with an “S” rank in the Platinum class with the option “All”.
Eclipse-eye – Beat Epilogue Tower from floors 81 to 90.
Titles:
Unlock the following titles by performing the corresponding tasks:
TITLE – HOW TO UNLOCK
Adventurer – Beat the Epilogue Tower.
Collector – Collect all tracks for the Jukebox.
Dark Knight – Reach level 99 with Sabata.
Gladiator – Get an “S” rank in all Boss battles.
Grand Master – Unlock all other titles.
Guardian – Maximize the protection capabilities of all shields.
Gun Master – Have all of Django’s guns at level 16.
Hunt Master Defeat one of each monster type.
Shooting Star – Get an “S” rank in all Laplace stages.
Sol Gunner – Reach level 99 with Django.
SP Agent – Beat all quests assigned by the guild.
Sword Master – Have all of Sabata’s weapons at level 16.
Treasure Master – Get all accessories.
Wanderer – Beat the game on all difficulty settings.
Completion bonuses:
Beat the game to unlock New Game mode and the Hard difficulty setting. Additionally, go to Sheridan’s Mansion to unlock Boss Rush mode.
Keeping food fresh:
If you have food that has at least one-quarter freshness left, go to any bank and access your warehouse/storage. Deposit the rotting food into the box and it will become fresh.
RockMan Crossover quest (Japanese version):
To unlock the RockMan Crossover quest in the Japanese version, at the eastern solar bank, press Up(2), Down(2), Left, Right, Left, Right, L, R, L, R.