[painkiller]

I have it in use again myself.

You need the latest version for your system.
https://builds.limetech.io/?p=steamtools

and this one
https://github.com/KyleSanderson/SteamWorks/releases

and this

https://forums.alliedmods.net/showthread.php?t=229556

Put in your server.cfg

sw_gamedesc_override_version Bla Bla
sw_gamedesc_override Harder Better Faster


Good luck