Walls on map: Press LS, RS(2), A, Left(2),
Up, A, C at the auto-map screen during game
play. Do not pause the game. A sound will confirm correct code
entry. All walls will be displayed on the map.
Full map: Press LS, RS(2), Right, Up,
B(2), Left, RS at the auto-map screen during
game play. Do not pause the game. A sound will confirm correct
code entry. All items will be displayed on the map.
Invincibility: Press Up, Right, A, B,
A, Down, A, LS(2) at the auto-map
screen during game play. Do not pause the game. A sound will confirm
correct code entry.
Weapons and ammo: Press A, Left, A, B, A,
Right, A, C, A at the auto-map screen
during game play. Do not pause the game. A sound will confirm
correct code entry. All weapons and 500 rounds of ammunition will
be available.
Level select: Press LS, Up, C(2), RS,
Down, A, Left(2) at the auto-map screen during
game play. Do not pause the game. A sound will confirm correct
code entry. Restart the game for access to any level.
Screen size: Press Up, Right, LS, Up,
Right(2), RS, A, Left at the auto-map
screen during game play. Do not pause the game. A sound will confirm
correct code entry. The game may now be set to run in two additional
larger screen sizes, including full screen.
Hint: Enemies:
Former Soldiers: They resemble your old friends, but now they
just fire pistols at you. They drop clips for the chaingun and
pistol when killed.
Former Sergeants: Meaner and tougher. They carry shotguns and
do more damage then soldiers. They drop shotguns when killed.
Imp: This creature throws fireballs and takes more bullets to
kill.
Demon: Appear in most areas and can rip your head off if you are
not careful. If you see more of them, use the chaingun.
Cacodemon: These creatures are ugly and have one big mouth. If
they see you, they will fire lightning balls from their mouth.
Use your rockets.
Mancubus: You have to use more then a chaingun to kill them. Use
ammo with caution.
Arachnotron: Fires plasma energy at you. Use your rifle.
Spider Demon: The ultimate enemy. Has a super chaingun mounted
on her body. Use your plasma rifle or rocket launcher.
Glitch: Saved games: The 3DO Memory Manager will lock up or reset when deleting
the saved game file named "DOOM.PREFS". It will also
be unable to display any files below this file. The file may be
deleted by using the built-in memory managers of Syndicate
or Wing Commander 3.