DOOM Eternal includes a mechanic that allows you to re-start any previously completed story level by selecting the desired cheat codes. When selecting a task, press R to see a list of available cheats. There will be a total of 15 buttons, but the first one simply allows you to activate all available codes at once. The other 14 are individual cheats that you must first unlock. All of them are hidden in different story levels. We’ll go into more detail below.

Infinite Lives

You get infinite extra lives (respawns).

You are interested in the mission “Hell on Earth”. When you get into the subway tunnels and find tentacles, look for a box on the right at one of the forks. Go up and take the code.

IDDQD

Infinite Guardian Armor from start to end of level.

Next up is the “Cultist Base”. After getting the super shotgun in the episode where you control the revenant, you’ll find yourself in an arena with opening cages (you’ll be hitting them). There will be enemies inside. Kill them all, inspect the center cage, and use the bars on either side to jump to the top with the cheat.

Silver Bullet Mode

Stunned demons die from a single punch or gunshot.

You are interested in the “Doom Hunters’ Aviary”. Once you get past the laser grid around the column, you will need to climb up the column and jump to the left through the hole onto another column. Don’t rush to fly to the marker, but climb up the wall to the top of the column.

Infinite Ammo

You get infinite ammo for any weapon.

You are interested in the level “Bloody Super Nest”. Where you insert three different keys, jump down on the left side (if you look at the blocked passage). In the fall, turn around and you will see a hole through which you can get inside.

IDKFA

Unlock all weapons and equipment.

Next up is the “Committee Complex” quest. The room is right behind the spacious hall where you’ll find the Executioner’s Gate. Once you’ve killed the enemies, you’ll need to follow the window and use the pipe to get into another building. There’ll be a hole in the floor. Jump down and pick up the code.

Boost Mode: “Onslaught”

The “Onslaught” mode will be active throughout the mission.

Next, you need to pay attention to the task “Core of Mars”. After firing a cannon and getting to the station with many tentacles, look for a hole. To the right of it there is a cheat code.

Boost Mode: “Rage”

The “Rage” mode will be active throughout the mission.

This cheat code is located in the location where you do the mission “Taras Nabad”. Near the blood nest just past the catacombs, but before the fallen titan. You will find yourself in a room with barrels. After entering the room, go left and look for a wall with a crack.

Hunger mode

Demons do not drop armor or health upon death.

On the “Nekravol” level. Behind the arena with the spiked devices. You can get there using the cage with corpses. In the side room, a marauder will attack you. There are rising cages nearby. But you need to jump to where they rise from.

Party mode

When dismembered, demons explode, scattering confetti everywhere.

This code is hidden in the mission “Nekravol II” and will be found after the first serious battle in the room with blue energy. There is a corridor on the left. Go there, jump on the ledge to the left, with a grate, and look back. A little lower there is a wall with a crack. Fly into it to find the cheat code.

Instant Stun Mode

One shot, melee hit, etc. will instantly stun any enemy.

There are two cheats on the level “Nekravol II”. This one can be found at the very end, after destroying two chains. Go to the elevator you took up here. There won’t be an elevator, so you can jump down and fly into the hole.

Boost mode: “Berserk”

During the entire mission, the “Berserk” mode will be active. Only for some levels!

You are interested in the quest “Urdak”. After you set up the second ring (of three), leave the control room by going left. There will be a niche with a wall on the side. Break it to find a cheat code.

All runes

It’s clear here.

Look for it in the Guardian Stronghold, where you get dropped between missions. You need to get to one of the two outer towers, inside which the skin for the Executioner is hidden. Unlock the room by inserting two Guardian batteries, then jump through the hole in the wall on the left and fly into the alcove below.

Upgraded suit

Unlock all Praetorian Armor abilities.

Once again, you need to visit the Guardian Stronghold. Go back from the main control panel and you will see a platform with a question mark at the top. There is a red button on the colored glass on the right. Shoot it to make a springboard appear.

QuakeCon Mode

Invisible spectators appear and applaud and shout depending on your actions.

Can be obtained as a reward for reaching a certain story point while progressing through the campaign.