Once done you will receive a message saying "Success! App '1180760' fully installed".

Step 4: Setup Risk of Rain 2 Dedicated Server
Go to Risk of Rain 2 Dedicated Server installation folder. Then go to "Risk of Rain 2_Data" folder, then "Config" folder.

Below is an example of a typical "server.cfg" file. Create a new text file and copy the following code there:

sv_maxplayers 4; // The maximum number of players.
steam_server_heartbeat_enabled 1; // Set to 0 to not advertise to the master server.
sv_hostname "My Risk of Rain 2 Dedicated Server"; // The name that will appear in the server browser.
sv_port 27015; // The port that the server will bind to. You cannot have multiple server instances with overlapping ports.
steam_server_query_port 27016;
steam_server_steam_port 0;
sv_password ""; // The password to join this server. Leave empty if none. This is obviously not encrypted so don't use anything sensitive.

Save as "server.cfg" file.

Step 5: Launch Risk of Rain 2 Dedicated Server

Step 6: Install Radmin VPN and create a network
Download and install Radmin VPN. In the main Radmin VPN window, click "Create Network".

Enter the network name, password and click "Create".

Step 7: Ask your friends to join the network
Send your friends the name of the Radmin VPN network and the password to join to this network.

Step 8: Add the server to the firewall exceptions
You need to add rules to the firewall. Open Radmin VPN -> System -> Firewall Exceptions and add Risk of Rain 2 Dedicated Server to the exceptions.

Step 9: Connect to Risk of Rain 2 Dedicated Server
Launch Risk of Rain 2. Open the in-game developer console by pressing "Ctrl" + "Alt" + "~". Type in the following command to connect to your server: "connect GameServerIP:27015", where GameServerIP is game server IP from Radmin VPN (for example: "connect 26.12.125.71:27015"). If you used a different port, change it accordingly.

Join Multiplayer Game

Step 1: Install Radmin VPN and connect to the network
Download and install Radmin VPN. In the main Radmin VPN window, click "Join Network". Enter the Network Name and Password and click "Join".

 

Make sure you and your friends are on the same network.

Step 2: Run Risk of Rain 2

Step 3: Add the game to the firewall exceptions
You need to add rules to the firewall. Open Radmin VPN -> System -> Firewall Exceptions and add Risk of Rain 2 to the exceptions.

Step 4: Join the game
Go to Risk of Rain 2 main menu. Open the in-game developer console by pressing "Ctrl" + "Alt" + "~". Type in the following command to connect to your server: "connect GameServerIP:27015", where GameServerIP is game server IP from Radmin VPN (for example: "connect 26.12.125.71:27015"). If you used a different port, change it accordingly.