Enter the following passwords to be able view the game's three alternate endings. Just Kill Dracula and watch the credits.

Unlock 1st Ending:
Enter the password RIG7 NVFX E45V 07BT

Unlock 2nd Ending:
Enter the password OYZY UQAU R12S SMIA

Unlock 3rd Ending:
Enter the password C1DF O26D L1KN SWJK