Here’s where to find all 14 cheat codes that can be activated to replay DOOM Eternal missions
Cheat codes in DOOM Eternal are entered through the Select Mission menu. You can replay any mission by choosing the cheats you want, and even collect all the collectibles. The only thing that will be inaccessible is secret skirmishes (pink altars).
| Cheat code name | What gives? | Where to find |
| IDDQD | The Guardian Armor lasts for the entire mission. | Cultist base |
| Instant stun mode | Demons are stunned by one bullet or projectile hit, explosion, Flame Belcher’s volley, or impulse. This cheat code does not work on unique bosses. | Nekravol II |
| All runes | Access to all runes. | Stronghold of the Wardens (hub) |
| Endless ammo | Infinite ammo for all weapons, including the BFG-9000 and the secret Unraveler. | Bloody supernest |
| IDKFA | You have unlocked and fully upgraded all weapons and acquired all equipment (grenades, saw, Flame Belcher, etc.). | Committee complex |
| Gain Mode: “Onslaught” | Constant Onslaught is active throughout the entire mission. A purple sphere that increases damage. | Core of Mars |
| Silver Bullet Mode | Stunned demons die from a single bullet or projectile hit, explosion, Flame Belcher volley, or pulse. | Doom Hunters Aviary |
| Upgraded suit | All Praetorian armor modules are open. These are the upgrades that you can unlock for Praetorian Tokens. | Stronghold of the Wardens (hub) |
| Boost mode: “Rage” | Constant Onslaught is active throughout the entire mission. A yellow sphere for enhancing mobility. | Taras Nabad |
| Hunger mode | Slain demons do not drop health and armor. | Nekravol |
| Party mode | Demons explode in sparkles of confetti when dismemberment of the entire body, the lower or upper part of it, as well as the loss of limbs or a headshot. | Nekravol II |
| Boost Mode: Berserker | Permanent “Berserk” when starting the map. Red sphere. When activated, you rip all enemies with one go. Only available on Hell on Earth, Glee, Bloody Supernest, Committee Complex, and Core of Mars maps. | Urdak |
| QuakeCon Mode | Invisible spectators scream joyfully depending on how you play. | Beat the game on Hurt Me Difficulty and above |
| Endless lives | The Executioner has an unlimited supply of lives. | Hell on earth |
Stronghold of the Guardians
- Cheat codes – 2
In the hub of the game, follow to the tower, inside which is one of the costumes for the Executioner. If you unlock this room, then on the left you will find a hole in the wall. Jump down through it, turn around and fly into the niche with the cheat code. You can try to get this cheat code without opening the room with the suit, but in this case, it is more difficult to fly to the desired location.
The second cheat code is located near the Stronghold control console where you start missions. Go forward and look at the ceiling. There is a “question” on the platform. To the right of it, there are stained glass windows under the ceiling. One of them has a red button. Shoot her for a red springboard to appear. Fly up and find a ventilation leading to the cheat code.
Hell on earth
- Cheat codes – 1
Technical corridors will go after the metro tunnel. After destroying the tentacles, look to the right in one of the corridors. There will be a box. Use it to climb into the ventilation, break the grate and get to the secret – the “Endless Lives” cheat code.
Cultist base
- Cheat codes – 1
In the room where you will break the locks on the columns (and they will rise, freeing the demons), find the crossbar on the central column. Push forward from it, turn around and double jump to the top of the same column. There will be an IDDQD cheat code.
Doom Hunter Aviaries
- Cheat codes – 1
Get to the second remote control (right after the first one), which needs to be activated in the story. Jump onto the wall of the tower, inside of which was a closed sarcophagus. Climb to the top to find the Silver Bullet Mode cheat.
Bloody supernest
- Cheat codes – 1
In the place where you should insert the three colored keys, there is a hole with a crack on the side under them in the wall. Punch a crack and discover a cheat code for infinite ammo.
Committee complex
- Cheat codes – 1
In one of the buildings, enemies will break a window. You will need to get out through the window and use the pipe to jump into the next one. There will be a hole in the floor leading to the IDKFA cheat code.
Core of Mars
- Cheat codes – 1
When you move to another place, having climbed into the cannon instead of the projectile, go through the corridor and turn right to find the Onslaught boost mode cheat code.
Taras Nabad
- Cheat codes – 1
When you go through the long tunnels, where the key and the Executioner’s Gate are located, go outside, take part in the storyline battle. Climb the steps and destroy the wall on the left side. There is a pink altar and a cheat code behind it.
Nekravol
- Cheat codes – 1
This level will have three rooms with cages moving upwards. In one of them, you are fighting a marauder. Jump down to where the cells are climbing to reveal a secret area with a cheat code.
Nekravol (Part II)
- Cheat codes – 2
After the plot skirmish, there will be a place where you have to fall down and slide down the inclined wall. Instead, jump left to the grate, turn around and jump below the opening where you came from to smash the wall with the crack. There will be a code.
At the very end of the level, when you break the wall, you will be prompted to enter the portal. Go back to where you climbed on the platform. Jump down and climb inside the corridor. When you first went up here, it was closed, but now everything is open. You will find the cheat code here.
Urdak
- Cheat codes – 1
When you move the second ring with the remote, go through the nearest door and jump onto the ledge on the left. There is a crack in the wall. It is just above the floor, so you need to jump to break the wall. Behind it you will find the last cheat code.
You will receive another cheat code when you fully upgrade the Praetorian armor.
