If anyone is confused at all, here is some less technical guidance.
-You are going to download and install the mod.
-You are going to set your game to always start with that mod.
-You are going to be able to join the UnityHQ NOLF2 servers with a double-click of your mouse.
1. Download and install the LivesForever mod. Download it from here
---- a. Create a folder C:\Program Files\Fox\No One Lives Forever 2\Custom\Mods\LivesForever (Spelling is important so name it exactly like this LivesForever)
---- b. Extract the contents (using Winrar or other file extraction utility) of LivesForever.RAR download, when extracted you should have the LivesForever.rez file in the LiveForever folder.
---- c. Yes, you really do have to make that folder.
---- D. Download the NOLF2 Multiplayer Launcher from here
2. Start NOLF2 like you used to, and select the new mod.
----a. Instead of the "Play" button, hit "custom," which is right below it.
---- b. Check the box next to the "LivesForever" Mod.
---- c. Start the game.
---- d. Close the game. Now that you have selected the mod, it will stay selected until you restart the game and deliberately unselect it.
Click HERE to visit the UnityHQ forum
Updated: June 23, 2017 = Eliteone