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: 

connect rust.alkad.org:28015 - Alkad
connect rust.alkad.org:28019 - Alkad 2
connect rust.alkad.org:2291 - Alkad 3
connect rust.alkad.org:2231 - PvE
connect rust-exp.alkad.org:7777
connect rust-exp.alkad.org:27777
connect rust-exp.alkad.org:7733


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