You need to have steam running.
Use a fake account. You can create an account here: https://store.steampowered.com/join/

run Launcher.exe

to connect to the server, press F1 and use the command: 

client.connect rust-exp.alkad.org:28015 - Alkad
client.connect rust-exp.alkad.org:28019 - Alkad 2
client.connect spb-2.alkad.org:2291 - Alkad 3
client.connect spb-2.alkad.org:2231 - PvE


Alkad                                                                                                
https://forum.alkad.org/                                                 
https://expshop.alkad.org/