Heretic Cheat Codes
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IDDQD           - Instant Death
IDKFA           - No Weapons/Ammo
COCKADOODLEDOO  - Turns yourself into a chicken
ENGAGExx        - Level Warp (episode/map)
GIMMExx         - Artifacts (a-j) (1-9)
     A  - Ring
     B  - Mask (Invisibility)
     C  - Potion
     D  - Mystic Urn
     E  - Spell Book
     F  - Torch
     G  - Hour Glass (Time Bomb)
     H  - Eggs (Turn People into Chickens)
     I  - Golden Wings
     J  - Chaos Device
KITTY           - Toggle Clipping
MASSACRE        - Kills ALL monsters on level
PONCE           - Full Health
QUICKEN         - God Mode
RAMBO           - All Weapons/Ammo
RAVMAP          - Changes Map Mode [must be in map mode]
SHAZAM          - Toggles Weapon Power
SKEL            - All Skeleton Keys
TICKER          - Display fps dots