Drag and drop Slopeless folder and all it's content into your game mods folder so it's like this:
\Kenshi\mods\Slopeless

More information on the Steam Page
https://steamcommunity.com/workshop/filedetails/discussion/1740462542/3264459260603094720/
And on Nexus Page
https://www.nexusmods.com/kenshi/mods/398

Help me by giving me your feedback and bug reports in any of those pages

Enjoy it and have fun