Unlock the following Modes by performing the corresponding tasks:
Albus mode - Beat the game with all villagers saved
Boss Rush mode - Beat the game with all villagers saved
Sound mode - Beat the game with all villagers saved
Hard mode - Beat the game to unlock
Level 255 in Hard mode:
To unlock level 255 in Hard mode, beat Level 1 in Hard mode. Alternately, link to Castlevania: Judgment on the Wii.
To unlock New Game+ mode, beat the game and save when prompted. Then, highlight your cleared saved game file, and press Right to select the clear sign to start a new game in New Game+ mode.
To make a treasure chest appear containing a medal, do not get hit when defeating a boss.