Open the Game Folder
In Steam, right-click Warhammer Survivors, then Manage, Browse local files.
Warhammer Survivors Mod
Any character on any mission, with weapons from both universes.

In Steam, right-click Warhammer Survivors, then Manage, Browse local files.
Copy everything in the zip into that folder.
The first start takes a few minutes.
Add this launch option in the game's Steam properties: WINEDLLOVERRIDES="version=n,b" %command%
Delete version.dll. Your save works without the mod.
Also delete MelonLoader, Mods, Plugins, UserData, UserLibs and NoUniverseRestrictions.txt.
Warhammer Survivors is by Auroch Digital. Warhammer, Warhammer 40,000 and Age of Sigmar are trademarks of Games Workshop. Not affiliated with or endorsed by either. Includes MelonLoader under the Apache License 2.0.