Cheaters never prosper
Chocolate Doom mirrors the original closely, including the built-in cheat codes. These can be used at any time during play, simply by typing them on the keyboard. In most cases you’ll see a message confirming that the cheat has been activated. The cheats below assume you’re using a QWERTY keyboard.
Cheats can work in multiplayer Deathmatches, depending on the settings made by the person setting up the game. Add the flag – nocheats to prevent others from having an unfair advantage. A few select cheats in no particular order are:
idchoppers: this cheat will equip you with the chainsaw. Press 1 to select it. idclev##: use this cheat code to warp to the episode or map of your choice – for example idclev02 would take you to map 2.
iddqd: this cheat sets your health permanently to 100 percent. This “God Mode” will make you immune to most forms of damage, although certain types of floors can still harm you. You can also be killed by telefragging – where other players or creatures teleport onto a spot where you’re standing.
There are plenty more along these lines for the lazy, desperate or perhaps less-skilled player. For a full list of cheats see the Doom wiki at http://doom.wikia.com/wiki/Doom_cheat_codes.