All Doom (1993) cheat codes in under 3 minutes

IDDQD = invulnerability

IDBEHOLDI = temporary invisibility

IDBEHOLDR = temporary radiation suit

IDBEHOLDS = temporary berserk

IDBEHOLDA = temporary automap

IDBEHOLDV = temporary invulnerability

IDBEHOLDL = temporary light

IDKFA = full health, ammo, weapons, armor, and keys

IDFA = full health, ammo, weapons, and armor

IDDT = show map detail
(only works when map is showing)

IDCHOPPERS = gain chainsaw

IDCLEVxx = warp to level "xx"
1st x = episode (1-4)
2nd x = level (1-8)
IDCLEV13 in this example

IDMYPOS = displays your position and bearing

IDMUSxx = play music from "xx"
1st x = episode
2nd x = level
IDMUS31 in this example

IDSPISPOPD = walk through walls

IDCLIP = walk through walls
(originally meant for Doom II, but it works in this version of Doom on Steam)

I purchased the Doom Classic Bundle off Steam. You can get it here:
https://store.steampowered.com/bundle/27490/DOOM_Classic_Bundle/

I made walkthroughs for all four episodes at the following links:

Knee-Deep in the Dead
https://www.youtube.com/playlist?list=PLtVYbszwxQ3CN9hN7z7U_DHbAMPmys9gq

The Shores of Hell
https://www.youtube.com/playlist?list=PLtVYbszwxQ3C-XSMY0-LjPqSv7iWOCmql

Inferno
https://www.youtube.com/playlist?list=PLtVYbszwxQ3DwY4GrSgsFRWK0qcY_lBCy

Thy Flesh Consumed
https://www.youtube.com/playlist?list=PLtVYbszwxQ3AAdryCM-ZKfbcfaG4u8cxb