I have done the "Tyrant Mine" Stronghold seven times now. And each time I do it, I don't start at the beginning. I start behind a wall and have to wait for the other players to collect 20 echoes in total to progress to the next part (where I am). How this happens every fuckin time, I dunno. But I hope to God BioWare know about this and its fixed soon. I like this game so far, and this is the only complaint I have.