Original music:
Enter the options menu. Set 05 as the BGM (background music) and 073 as the SE (sound effects) selections. Press Start to begin game play. The original Castlevania music will begin playing when the standard weapon is powered to level 4. This effect will last until you are hit.

Expert difficulty level:
Press Up(2), Down(2), Left, Right, Left, Right, B, A at the title screen. A sound will confirm correct code entry. Expert difficulty may now be enabled on the options menu.

Nine lives:
Enable the "Original music" and "Expert difficulty level" codes in that order. A sound will confirm correct code entry.

Hint: Change difficulty level and options during game:
Reset the game at any time during game play. Enter the options menu at the title screen to alter any desired of the options. When finished, start a new game and choose either character. You will start from the section last played before resetting the game. The best use for this trick is to play under the easy difficulty setting until you get to Dracula. Then use this trick and change to the expert difficulty setting. This will allow you to see the best endings without too much difficulty.

Hint: Restore weapon power-up:
When your weapon is powered up to its highest level, you may accidentally pick up a sub-weapon that will replace your special sub-weapon. If this happens, simply find and pick up a sub-weapon of the same type as the one that you possess. You will get the special sub-weapon back.

Hint: Continue game play:
Press Reset to restart the game after running out of continues, then start a new game. It will resume from the point where the game was reset with two continues and the same amount of lives. Note: The score and weapons will also be reset.

Super passwords:
The following are the best passwords that can be obtained in the game. Each password results in two continues and nine lives.

Key
-: Blank
C: Coat of Arms
A: Axe
J: Jewel

John Morris (easy difficulty):

Level 2
A-CA
A--A
AA-A
---A

Level 3
AACC
-CCC
AJA-
J---

Level 4
-AAA
CCCA
J-AC
JAC-

Level 5
A-JJ
A--A
JC-A
--A-

Level 6
ACAA
ACC-
JACA
A--A

John Morris (normal difficulty):

Level 2
AC-J
A-CA
JACA
A-AA

Level 3
-CA-
J-CJ
JJCJ
AAJA

Level 4
-CJ-
JCCJ
--CJ
AA--

Level 5
A-CC
A-C-
-C-A
--A-

Level 6
-CJJ
CCCA
-ACC
CA--

John Morris (expert difficulty):

Level 2
-CAJ
J-AC
-ACJ
AAJ-

Level 3
A-CC
A-CA
-J-A
--C-

Level 4
-CJA
C-A-
C-CC
CAJ-

Level 5
A-AJ
A-CA
CC-A
--A-

Level 6
-AJ-
CCAA
CAAC
JAA-

Eric Lecarde (easy difficulty):

Level 2
-ACC
--CC
AJCJ
AAJ-

Level 3
AC-A
C--J
J-C-
C-A-

Level 4
ACCC
C--J
JCC-
C-AA

Level 5
ACJ-
JCC-
JACA
A---

Level 6
ACAJ
C--J
JJC-
C-JA

Eric Lecarde (normal difficulty):

Level 2
-CC-
--CC
JJ-J
-AC-

Level 3
-CAA
A-CA
--CC
CAAA

Level 4
-ACC
ACA-
-CAC
JAC-

Level 5
-C--
A-CA
-ACC
CAJA

Level 6
AC-C
C-CC
-JC-
C-JA

Eric Lecarde (expert difficulty):

Level 2
-CAA
--CJ
-J-J
-AC-

Level 3
ACJA
C-CJ
C-C-
C-A-

Level 4
-AAJ
ACAA
CCAC
JAC-

Level 5
-AAJ
-CAC
CACJ
AA-A

Level 6
-CAA
ACA-
CJCC
CA--

Hint: John Morris' full ending text:
"The resurrection of Dracula has been averted. However, the blood of the vampire hunters still courses through his veins. Congratulations! You are master of the vampire killer."

Hint: Eric Lecarde's full ending text:
"Thus, Eric has fulfilled his destiny as a vampire hunter. Now he must venture forth into greater unknowns.... Congratulations! You are master of the vampire killer."