Have just spent several frustrating hours in Cold Harbor trying to do the quest "The Final Assault". There are various inputs on how to light the various portals floating around. Unfortunately, onne Gaiscioch member told us that you need to jump off of a tower, and then target the portal, and press the execute key while in the air, then you die. I have even seen information that says you need to take off your armor and weapons first. I don't know the name of the individual and even if I did I would not post it here for this is not the place for that. Suffice it to say this method is not one that works.
After doing additional research just now, it appears that the information this individual provided to others on Raid Call is how should I put it, less than accurate. This quest was completed and confirmed via YouTube video on 4/16 by a player standing on the ground and not jumping. I went to the ESO forums and found an entry stating the quest is currently bugged, with no ETA on correcting this. This is important since you cannot progress to vetran status and the associated upcoming quest lines/content until you complete this quest.
I find it quite upsetting that a member of our guild would troll such inaccurate information causing several players hours of frustration.
Bottom line, if you are having trouble with a quest check the ESO forums first to find out if it is bugged. Second, take what ever advice is offered, based on the cost, i.e. if it is offered for free......I would be a little suspect.
Caytlynne of Skye