Lunar Knights Codes -

RockMan Crossover quest:
In the Japanese version of the game, press (x2), (x2), , , , , , , , at the eastern solar bank (town).

 Boss Rush mode:
Successfully complete the game, then start a new game with your cleared game file. Enter Sheridan's Mansion to access Boss Rush mode.

Hard mode:
Successfully complete the game.

Titles:
Successfully complete the indicated task to unlock the corresponding title.

Adventurer: 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: Complete all quests assigned by the guild. 
Sword Master: Have all of Sabata's weapons at level 16. 
Treasure Master: Get all accessories. 
Wanderer: Complete the game under all difficulty settings. 

Django Gears:
Day-Walker: Complete Boss Rush mode with an "S" rank in the Platinum class with the option "All". 
Eclipse-Goggles: Complete the Epilogue tower from floors 91 to 100. 
Soul-Saver: Complete Boss Rush mode with an "S" rank in the Gold class with the option "All". 

Sabata Gears:
Blood-Sucker: Complete Boss Rush mode with an "S" rank in the Gold class with the option "All". 
Night-Stalker: Complete Boss Rush mode with an "S" rank in the Platinum class with the option "All". 
Eclipse-eye: Complete Epilogue tower from floors 81 to 90.