Doom 2: Hell On Earth [cheats]
Enter one of the following codes during game play to activate the corresponding cheat function.
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
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)
Network cheat mode:
Hold [Alt] and type iddtiddtiddtiddt in map mode.
Deathmatch cheat mode:
Type t in the map to enter talk mode. 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.
Start the game with the doom2 -turbo 250 command line to have your player in turbo for the entire game.
Type idclev32 or idclev31 during game play to restart in a totally new level. When you complete one of those levels you will always start on the level suburbs and continue your Doom 2 game.
At the final level, type idclip to enable the "Walk through walls" code. Go through the wall with the demon head on it. You will see that the final boss is the head of John Romero, the co-creator of the Doom series.
If you play the challenge made by the final boss backwards, you will hear him say "To win the game you must kill me, John Romero".
Go to level 30, Icon Of Sin. Collect all the items, then enable the iddqd code. Go through the warp, then enable the idclip code. Go backwards until you get to the skull switch. Blast the demon that appears with two rockets to kill it. Activate the switch. Go on the rising platform using the idclip code. Do not walk through the wall of the demon. Blast the demon's forehead (the part that makes skull boxes). This will hit the head on a stick inside. You should be able to hear a roar. The rocket box on top of the platform can be collected an unlimited number of times, unless you collected the box beforehand.