|Name of the file: Castlevania Chronicle : Akumajo Dracula - Author: ANO - [PSX]|
For every stage you complete in Arranged Mode (there are 26 in all), you will unlock one illustration by Ayami Kojima, the artist for Akumajou Dracula X: Gekka no Yasoukyoku / Castlevania: Symphony of the Night and for Akumajou Dracula X68000 / Castlevania Chronicles.
The illustrations can be accessed by selecting Special Option in the Option menu.
Sound Module Select
Hold L1 and R1 while selecting Original Mode, and you'll unlock an option to change the music played in the game. This works in Arrange mode, as well.
Successfully complete Arrange Mode to unlock Time Attack Mode where you can try to better your stage clear times.