Castlevania: Aria of Sorrow Unlockables & Cheat Codes

No Items used in game
Type NOUSE as name when starting a new game.

No Souls used in game
Type NOSOUL as name when starting a new game.

Boss Rush Mode
Beat the game once and get the good ending.

Hard Mode
Complete the game and get the good ending.

Play as Julius Belmont
After beating the game with the good ending, enter "Julius" as your name.
After the intro, you should be playing as Julius Belmont.

Play as Julius Belmont in Boss Rush Mode
Beat the game using Julius, then select Julius' cleared game file when you start the boss rush.

Sound Test Mode
Complete the game with the good ending and the Sound Test will appear on the Main Menu.

Bonus Items
Replay the game in Hard mode. This is easier if you use a previous saved game file. Look around any place where you think that items should be. Two new weapons appear in Hard mode, and Death's Scythe and Silver Bullet Gun.