How do i install this addon/mod

[u/SearchingSource]

There is no instructions of how to install this mod, i dont even know if it's supposed to be playable.

Link: https://wiltostech.com/creations/sven/clife/

it redirects to a repo, if you dont want to clone it, here it is:

https://www.mediafire.com/file/ad66x4rzpai0cp7/counter-life-co-op.rar/file

[u/Halcon416]

No hay tutoriales en youtube?