you can't. Using multiclient opens 2 gameguards. That's it.
Use Ollydbg. Or go to cheatengine.org on how to make a UCE to bypass CE from gameguard.
One thing: botsmalls' Rohan Bot doesn't use gameguard, and still connects to the game. You might wanna start figuring out how they did it using the bot files you downloaded. Just a hint