Start the game with a saved game file on your memory card from Shadow Hearts to receive two extra cards.
Successfully complete the game to unlock the "Theater" option.
Successfully get all souls leveled up to the maximum, including Kurandos to get Yuri's ultimate Fusion Soul. Then in the final save point in the last dungeon, go into the graveyard. On the tree with the second Yuri, there should be an item called "Drop Of Rebirth". This is used to obtain Seraphic Radiance. Note: This was done in the Japanese version of the game.
The prison code is "864".
The doll house code is "BRIDGET".