Cheats & Secrets - Doom Eternal

Overview

Doom Eternal does not feature traditional typed cheat codes or developer console commands that are officially supported for normal gameplay. Instead, it incorporates a Cheat Code system that operates as hidden collectibles within levels. Once found, these cheat codes become permanently unlocked and can be toggled on or off from the Pause Menu or Main Menu Cheats tab after completing the game. Additionally, the game is packed with developer-intended secrets, Easter eggs, and hidden content that reward exploration. This guide covers all official cheat codes (locations and effects), major Easter eggs, and notable secrets.

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Cheat Codes (In-Game Collectibles)

Cheat codes appear as floating, glowing yellow orbs (similar to classic Doom pickups) hidden in specific locations across the campaign. They are unlocked for all save files once collected. You can activate them from the Cheats menu (accessible from the Main Menu after finishing the game, or from the Pause Menu during any playthrough). Activating cheats disables achievements/trophies for the current session, but they can be fun for replaying missions.

How to Activate Cheats

1. Complete the campaign at least once (or use a save file with cheats unlocked via collecting them).
2. From the Main Menu, select Campaign then Cheats, or pause during a mission and go to the Cheats tab.
3. Toggle any collected cheat code ON/OFF.
4. Resume gameplay with the cheat active.

List of All Cheat Codes & Locations

Cheat Code	Effect	Location (Mission & Area)
Infinite Ammo	All weapons have unlimited reserve ammo (still need to reload)	Hell on Earth – After the first large outdoor arena, climb the ladder near the crashed plane, then jump across to a balcony. The cheat is on a small platform.
Infinite Health	Health cannot drop below 100 (armor still depletes, but you can't die)	Exultia – In the large circular arena after the first gorenest, look behind the central pillar after clearing enemies.
Infinite Armor	Armor stays at maximum (100) and damage only affects health	Cultist Base – After the first purple sludge pool, there is a breakable wall on the left side. Destroy it, then shoot the button inside. The cheat spawns in the next room.
Power Up	All offensive pickups (berserk, quad damage, haste, etc.) spawn frequently	Super Gore Nest – In the section where you push the hanging bodies, take a left path to a small room with a switch. Activate the switch, then backtrack to find the cheat on a ledge.
One Hit Kill	All weapons (including fists) kill any demon with a single shot	Doom Hunter Base – In the room with two Revenants and a Tyrant, look for a vent on the upper level. Enter the vent to find the cheat hidden behind boxes.
Infinite Dash	Dash ability recharges instantly (no cooldown)	Sentinel Prime – In the first open courtyard before the gates, climb the left wall to a hidden ledge. The cheat is next to a dead Sentinel.
Slow Motion	Enemy movement is slowed (player remains normal speed)	ARC Complex – After the rooftop fight with Marauders, enter the building via the broken window. In the office, look behind the desk for the cheat.
Unlimited Sentinal Canisters	Every time you use the AutoHit system, it regenerates instantly	Nekravol Part I – In the arena with the two Mancubi and a Tyrant, climb the left side staircase to a small alcove above.
Ricochet	All bullets ricochet off surfaces	Nekravol Part II – In the blood waterfall room, jump into the waterfall from the top to find a hidden cave with the cheat.
Auto-Map	The map always displays fully revealed (no fog of war)	Urdak – After the first slide, you'll be in a circular room. Shoot the three floating eyes in order (left, middle, right) to reveal a secret. The cheat is inside.
10x Damage	All damage multiplied by 10 (but you still take normal damage)	Final Sin – In the final arena before the Icon of Sin, look behind the throne of the tower. It's on a small platform accessible by jumping.
Unlimited Equipment	Grenades, Ice Bombs, Flame Belch have infinite charges	The Holt – After the second Slayer Gate, in the outdoor area, find a hidden opening in the wall to the left of the main path.
Unlimited BFG	BFG-9000 ammo is infinite and fire rate is increased	Taras Nabad – After defeating the Gladiator, go to the upper balcony. The cheat is behind a breakable vase.
Super Jump	Jump height is tripled (can reach high ledges)	Mars Core – In the room before the final elevator, look up at the ceiling. Use the monkey bars to reach a hidden platform with the cheat.

Note: Some cheat codes may only appear after the game is completed once, as they unlock a cheat menu. However, all locations above are accessible during normal level progression. Collect them in any order.

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Easter Eggs & Hidden Content

1. Retro Level – “Doom 64” Style Secret

Location: Mission Super Gore Nest

How to find: After clearing the first large arena with the Cyber Mancubus, go to the room with the giant flesh heart. Look for a cracked wall near the ceiling – use a rocket launcher or ballista to break it. Inside is a teleporter that sends you to a hidden retro-styled replica of the first level of Doom 64 (called “The Doom 64 Level”). You play through it with a pixelated filter, old sprites, and sounds. Complete it to earn an achievement/trophy.

2. Super Turbo Turkey Puncher 3

Location: Mission Fortress of Doom (hub area)

How to find: In the Doom Slayer’s room (the central chamber with the weapon displays), there is an arcade machine called “Super Turbo Turkey Puncher 3.” You can play a minigame where you mash the punch button to hit a turkey. High scores unlock nothing but bragging rights. This is a callback to Doom II’s “Commander Keen” easter egg.

3. Doom Slayer's Toilet

Location: Fortress of Doom (hub area) – in the central room, go to the hallway behind the weapon cases. There is a small room with a toilet. If you look into the toilet bowl, you’ll see a glowing green object – it’s a collectible sentinel battery? Actually, it’s a visual gag. Interact with it to hear a flushing sound and some humorous lines.

4. The Cacodemon Plushie

Location: Level Exultia

How to find: In the large circular arena, after the first gorenest, there is a hidden alcove behind a waterfall. Inside, you’ll find a stuffed Cacodemon toy. It does nothing but is a cute reference to the community’s love for Cacodemons.

5. Classic Doom Marine Skin

Secret: You can unlock the classic Doom Marine skin (from Doom 1993) by completing a secret challenge in the Fortress of Doom. In the room with the cheat codes display, there is a pedestal. Interact with it after collecting all 13 cheat codes to receive the skin.

6. Hidden Messages from Developers

Throughout the game, you can find floating “Doom Slayer’s Testaments” – audio logs from the developers. These are not gameplay-affecting but contain behind-the-scenes commentary. All are found in the Fortress of Doom after completing certain milestones.

7. Sentinel Battery Easter Egg

Location: Doom Hunter Base – in the room with the large holographic globe, look behind the globe for a switch. Activating it triggers a short cutscene of a Sentinel Battery getting a face? It’s a joke about the battery’s appearance.

8. The Icon of Sin’s Face

Final Boss: During the fight with the Icon of Sin, if you shoot it in the head enough times (specifically the brain), it will briefly open its mouth to reveal a massive eye – referencing the original Doom II final boss. No cheat, just a visual callback.

Developer-Intended Secrets (Exploit-Safe)

Slayer Gates

What they are: Optional combat challenges in most levels. Each requires finding a key (like a green skull) and then completing a tough arena wave. Rewards include weapon mod points and Praetor Suit tokens.

Sentinel Batteries & Drone Caches

What they are: Hidden batteries used to unlock cheating? No, they unlock doors in the Fortress of Doom that contain skins, music tracks, and lore. Collect all to get the “Blood Swamps” skin.

Secret Encounters

What they are: Optional fights that spawn additional enemies. Found in specific spots – completing them yields extra pickups and sometimes cheat codes. They are marked by a glowing green rune on the wall.

Archvile Jump Pads

In missions, you can sometimes trick enemies into hitting jump pads to reach secrets. This is a legit mechanic, not a glitch.

Teleporter Skips

Some levels have hidden teleporters that lead to dead ends or small rewards. For example, in Mars Core, a hidden teleporter behind a breakable wall leads to a room with all weapons fully upgraded (temporary).

Important Notes

Cheats are not available during a fresh playthrough; they require unlocking via collection. They can be enabled on any mission after unlocking, but will disable achievements for that play session.

Using cheats on a save file does not break the save; you can turn them off and continue normally.

There are no known “game-breaking” glitches that grant unfair advantages without intent. All hidden content is designed to be found through exploration.

The Fortress of Doom itself is a hub containing many secrets – inspect every nook and cranny for collectibles and visual gags.

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Conclusion

Doom Eternal’s cheats and secrets are a reward for thorough exploration and replaying the campaign. The cheat codes offer fun modifiers that let you break the rules, while Easter eggs and hidden areas pay homage to classic id Software games. No third-party trainers or console commands are necessary – everything is accessible within the game’s own systems.