Lunar Knights
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.
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.
Successfully complete the indicated task to unlock the corresponding Django Gear:
Day-Walker: Successfully complete Boss Rush mode with an "S" rank in the Platinum class with the option "All".
Eclipse-Goggles: Successfully complete the Epilogue Tower from floors 91 to 100.
Soul-Saver: Successfully complete Boss Rush mode with an "S" rank in the Gold class with the option "All".
Successfully complete the indicated task to unlock the corresponding Sabata Gear:
Blood-Sucker: Successfully complete Boss Rush mode with an "S" rank in the Gold class with the option "All".
Night-Stalker: Successfully complete Boss Rush mode with an "S" rank in the Platinum class with the option "All".
Eclipse-eye: Successfully complete Epilogue Tower from floors 81 to 90.
Successfully complete the indicated task to unlock the corresponding title:
- Adventurer: Successfully complete 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: Successfully complete all quests assigned by the guild.
- Sword Master: Have all of Sabata's weapons at level 16.
- Treasure Master: Get all accessories.
- Wanderer: Successfully complete the game on all difficulty settings.
- Collector: Collect all tracks for the Jukebox.
Successfully complete the game to unlock New Game+ mode and the Hard difficulty setting. Additionally, go to Sheridan's Mansion to access Boss Rush mode.
If you have food going bad 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 again.
At the eastern solar bank (town), press Up(2), Down(2), Left, Right, Left, Right, L, R, L, R to unlock the RockMan Crossover quest.