The orbs that appear whenever you defeat a boss offer players a chance at pulling a neat little stunt. Grab the orb in mid-air while in the final frames of your character's attack (i.e. whip fully extended as Juste, or sword fully swung out as Maxim); if timed properly, a congratulatory word like "GREAT!" will appear above your character. Note that this has no effect on your rewards, it's just a neat little Easter Egg.
After beating the game once put these in as the name entry:
Harder Game- HARDGAME
No Magic- NO MAGIC
Play as Maxim- MAXIM
Get the best ending in the game. Start a new game and choose your name as MAXIM. You will play as Maxim! He is somewhat better than the original player, triple jump, better dash, theoredicly, you can beat the game in one hour with him.
Unlock Boss Rush Mode and play it once. Reset the machine and during the Konami title screen, press up, up, down, down, left, right, left, right, B, A. Then start up Boss Rush Mode to play with the original vampire slayer! Slower, but stronger.
Beat the game once, then start a new game and enter the name NO MAGIC.
Beat the game in any way to unlock this mini-game. The bosses depend on your dificulty level when beating the game, the higher, the harder.
Beat the game with the best ending and you'll unlock the sound test mode.
To see sound test and the good ending you must beat the game with all of Draculas relics and be wearing Maxims bracelet and Justes this will alow you to fight Dracula and if you beat him save both Lydia and Maxim.