Debug mode:
Enter QQQQ QQQQ QQQQ QQQQ as a password and ignore the
"Incorrect Password" message. A "Debug" selection will
appear on the option menu. Level select, all weapons,
invincibility, and monster targeting may now be accessed.

No clipping mode:
Enter NOCLIP as a password to pass through walls.

Full weapon passwords:
Enter one of the following passwords to start at the
corresponding level with full weapons.

LEVEL                  EASY                  NORMAL
Realm of Black Magic   ?DRY OPFG P3BT VBKX   6DRW OPFG T3BR VBJX
The ElderWorld         95RV TPFG QQBT JBJT   5SR9 TPFG VQBR JBCT
The NetherWorld        81RV 6PFG RGB5 5BJH   41R9 6PFG WGBQ 5BCH
Shub-Niggurath's Pit   79RV 2PFG R7BS SBJF   39R9 2PFG W7BQ SBFC

LEVEL                  HARD                  NIGHTMARE
Realm of Black Magic   2DR? OPFG Y3BP VBCX   YDR8 OPFG 23BM V3BX
The ElderWorld         1SR7 TPFG 2QBP JBBT    XSR TPFG 3QBM JBFT
The NetherWorld        01R7 6PFG 0GBN 5BBH   W1R5 6PFG 4GBL 5BFH
Shub-Niggurath's Pit   Z9R7 2PFG 07BN SBBF   VR95 2PFG 47BL SBBF