Crazy mode:
Beat the game. Start a new game with the name @CRAZY to unlock Crazy difficulty.
Play as Trevor:
Beat the game. Start a new game with the name @TREVOR to play as Trevor.
Moebius Brooch:
Beat the game on Crazy difficulty to unlock the Moebius Brooch for purchase at the shop. It lets you do special moves without any heart cost.
Moai Statue:
Have a saved game file from Castlevania: Lament Of Innocence on your memory card to get an Moai statue worth 5,000 gold.
Sound Mode:
Beat Boss Rush mode to unlock the music box in the warp room. Use it to hear the game's music.
