Doom 2: Hell On Earth Cheats & Codes

Network Cheat Mode

Hold [Alt] and type "iddtiddtiddtiddt" in map mode.

Cheat Codes

While playing a game, enter one of the following codes to activate the 
corresponding cheat function:

RESULT			CHEAT CODE 

Invincibility			iddqd
All weapons, keys, ammo,
 and 200% armor		idkfa
Reset ammunition		idfa
Berserker strength		idbeholds
Temporary invincibility		idbeholdv
Temporary invisibility		idbeholdi
Full automap		idbeholda
Anti-radiation suit		idbeholdr
Light amplification visor		idbeholdl
Walk through walls		idclip
Chainsaw			idchoppers
Level select			idclev[level number 01-32]
Toggle full map; full map
 and objects; normal map		iddt
Display coordinates and heading	idmypos
Change music to indicated level	idmus[level number 01-32]
Kill all enemies in level		fhhall
Invisible to enemies until attack	fhshh

Deathmatch Cheat Mode

Press T in the map to enter talk mode. Then, hold [Alt] and type "iddt" several times. This will reveal the entire map. Repeat the code to reveal all items. Repeating the code again will return the map to normal.

Doom 2: Hell On Earth Hints, Tips, Tricks, Secrets, & Glitches

How To Walk Through Walls.

If you ever wanted to walk through walls here's your chance. Just type idclip and you can walk through walls but if you are in a wall you can't shoot the enemy on the other side until you are fully out of the wall. If you have the code on you can't pick things up.

Kill All Enemies In The Level

You can do this anywhere in the game. Just type "fhhall" and everyone will just die.