The Korea server has been dead. Im not sure about the Chinese version and Taiwan.
This is the tools to extract .pkg files and everything is in there including the models.
Ochii/UnCSO2
This is the kr client that used for the released private servers
cso2_nexon_v24406.7z
Launcher for the client.
Extract it to your Bin folder where the
CounterStrikeOnline2.exe located
cso2-launcher_0.3.0-master-0d9c40f3-Release.7z
English patch for the client
MEGA
Just make extra folders inside your data folders and extract that txt to it. For example : Data/cstrike/resource/
This test server I was playing on hosting by a forum friends.
IP: 35.204.109.51 im not sure if he still leave the server online or not. He said was on his VPS.
To connect to the servers are very simple. All you need to do is make a shortcut of the launcher.exe then add -masterip 35.204.109.51 -lang english
You can login with any username n password as you desired