!UPDATE!
The .bin is now updated to the newest version of the game + DLC
HOW TO USE
Simply replace the regulation.bin file in your game installation, usually under C:\Program Files (x86)\Steam\steamapps\common\ELDEN RING NIGHTREIGN
HOW TO UNINSTALL
Simply delete the file and let Steam repair the game via verifying Integrity of the game files, or simply move the vanilla regulation.bin somewhere else and then put it back.
Your save file NEEDS to have the regular versions defeated beforehand in order to fight the Everdarks, since the Everdarks only unlock that way, that's just how it works. Since this completely removes the regular ones from the expedition list, you cannot do the normal ones at all.
USE THIS IN OFFLINE MODE!!!