Hey Gamers! Welcome to the Wolfhunter DLC of Elder Scrolls Online!
The video below will show you how to make this achievement easy peasy! This only needs to be done on Normal mode, even though the video is shot on Veteran.
Basically this strategy is going to skip his Symbol of Xarxes mechanic completely, and thus avoid any possible damage from this attack. By doing this method, everyone in your party will unlock this achievement no problem. We are going to run 3 DPS and 1 Tank for this method, and again it only needs to be done on normal.
Check out the video for the details!