I'm making this due to the disparity of guides out there on how to do this. You can pretty easily learn how to setup a dedicated server, but nothing really tells you how to install mods such as Natural Selection, that aren't widely covered by other guides.
Mods I've tested so far:
Natural Selection
Action Half Life
Tools to Download:
SteamCMD GUI - Direct Download Link - DOWNLOAD THIS
SteamCMD GUI - GitHub Homepage
Step 1 - SETTING UP STEAM CMD.GUI & STEAM CMD
Pick and create a working directory to keep things tidy
I plan to install a few Half Life mods, so i'm working off my D:\ Drive
D:\Half Life Dedicated Servers\
Create a few folders we'll be working out of...
D:\Half Life Dedicated Servers\Steam CMD.GUI
D:\Half Life Dedicated Servers\hlds
Download Steam CMD.GUI and Extract/Move it into the folder we made for it
Open it, and in the top right - Click Download SteamCMD (this downloads SteamCMD, which will allow us to download the hlds server tool.
This usually downloads steamcmd.zip, we'll need to extract it - head to the folder Steam CMD.GUI is in, and find and extract SteamCMD, there's no need to move it.
Go back into SteamCMD.GUI and in the Update/Install tab, under the Steam CMD Configuration Section click Browser, and Find/Choose your SteamCMD.GUI folder steamcmd.exe is in.
Step 2 - SETTING HLDS - Half Life Dedicated Server
In SteamCMD GUI under - Server Configuration - use the dropdown to pick - Half Life Dedicated Server
Click the tickbox - Login as Anonymous
In Server Path choose the folder you'd like to download you dedicated server to, if your following a similar path to me, I put my dedicated server in
D:\Half Life Dedicated Servers\hlds
After that click - Update/Install, this should open a console and you can watch as it progresses
- SAVED FOR NOW, THIS IS A DRAFT
