DOOM Eternal

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Kaiser_will and Friends

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About this mod

A handcrafted and extensive overhaul of the entire base campaign for DOOM Eternal

Slaughter new enemies, face new challenges and conquer 18 custom Master Levels in the most ambitious mod of it's kind.

Permissions and credits

This mod - What is it? Where am i?

KaiserCampaign is a complete overhaul of the main campaign for DOOM Eternal, featuring:

  • 13 custom master levels
  • 5 secret levels. 
  • 12+ AI Variants, 6+ Custom bossfights, and countless special oneoff enemies
  • Extensively polished combat designed for high-skill Eternal players
  • DLC Content seamlessly merged with base campaign levels
  • comedy stylings

This mod rebalances multiple aspects of the slayers kit (The Hammer, Secret upgrades, Extra upgrades, Support runes, Specific demon resistances) for a completely fresh experience and custom combat loop. The goal being to further elevate the skill celling and creative expression of players without changing too much about the base game and making it unrecognizable.

New codex pages, loading screens, and a playable tutorial are all available for players who want to see the new features. My Youtube channel also features various sneak-peaks and developer playthroughs of what you can expect from the campaign.

As of update 2.3, KaiserCampaign has reached the limit of what custom DOOM Eternal mods can handle. As a result of this, 2 main files are now necessary. is the main mod file. Install this as normal. (Put it in your mods folder and run the mod injector batch file) is the add-on update/hotfix file which includes custom enemy assets and bugfixes which are required to keep your game from crashing, as well as new features of Act 3. (Extract this file in your DOOMEternal folder, putting it in your mods folder will not work)

  • Extract/Unpack with something like winrar, winzip or any other program of your choice. You should see a folder called "overrides"
  • Requires M3atH00k (XINPUT1_3.dll) to be installed in the same folder, or else the mod will not work properly
  • If everything is installed correctly, you should see the Icon Of Sin on your main menu.
  • Because this specific file does not use mod injector to work, it does not require mod injector to be run every time you install a new version of it

Both DLC's for DOOM Eternal are required for this mod to function.
Cracked versions of the game are not and will not be supported

KaiserCampaign is NOT compatible or at risk of serious bugs with any of the following mods - 

1. Anything altering the file structure of the games files. If a mod adds new content and uses a .json to add them to existing file structures, it may interfere with KaiserCampaign, and may result in widespread and random issues. To air on the side of caution, please disable all other mods before reporting anything. 

2. Other campaign or level altering mods. This includes "Slaughter maps", Horde mode, other custom campaigns, etc. Do not report any bugs if you have one of these installed.

3. AI altering mods. This mod edits multiple AI/bosses and contains multiple new files for custom AI. Expect strange or inconsistent behaviors with enemies if you use one of these.

3. "Essentials" or "Slayer Overhaul" modpacks which contain multiple repackaged mods from different authors. Because these are often not properly maintained, or "dirty" from dumping in so many random files, expect the possibility of bugs as a result. 

Because Kaisercampaign is such a large and comprehensive mod, it gets broken by alot of other stuff. So before reporting a bug, be sure to disable all of your other mods first. This mod is also not designed to be installed/uninstalled mid playthrough. Kaisercampaign can and will alter your save files and what weapons/abilities you have.

This mod uses DLC1, DLC2 and Horde mode maps as a loading tool for new assets. It is recommended you do not play dlc2/HM with this mod installed, as you may notice strange things that may not make sense such as gameplay changes, enemy changes, or text changes.

Please understand that while i dedicate many hours to fixing bugs and making the most seamless experience possible. Because of the amount of custom files, and because of the limit i push the engine to in order to create this, that there will be random crashes, possible softlocks, etc. 


Check the Permissions and credits tab to see the full credits for everyone involved, i couldn't do this without the support of my community.

If you want to speak with me directly, keep up to date with the newest and cutting edge DOOM Eternal mods, or learn how to make mods like this for yourself, be sure to join The DOOM Eternal Modding Hub

Ok, all of that is cool. But can you tell me more?

Yeah, yeah. sure. Fine. But you're the one who's getting spoiled here.

Custom Demons


Escalation Encounters/Bosses


New Secrets and Secret Levels


New Powerups


Balance Changes