Hold [Alt] and type "iddtiddtiddtiddt" in map mode.
Deathmatch cheat modePress 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.
Cheat CodesWhile playing the 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 |
