Breaching the Tomb

Yeah, I learned the hard way that you NEED to complete your class Order Hall (up to the point where you get you title) to complete this achievement (or else Maiev won't give you the quest "Champions of Legionfall").

Defending Broken Isles is absurd. So these events spawn once every 18 hours, are supposed to last 6 hours, but are getting completed about an hour or two after they start in remix at the moment? I don't have a problem with timed events, but this feels like unless you build your day around being available in the tiny window it's up, that you're just gonna keep missing it. Can they not make the invasions, that are required to progress this, last for the full duration they're supposed to be up, at least?

You specifically need the final quest where you collect the heroic artifact appearances which is only offered after you have the Glorious Campaign achievement. For warlock at least the quest is not visible on the map and you need to go the highest point of the order hall to find Ritssyn to get the final quest.