Its literally impossible as a on level full healer spec. This is game breaking tbh, almost as bad as all the bugs with the BH end of act 1 quest. I waiting for my buddy so i have some hope of doing, it, but the fact that bioware has several mandatory story quests severely bugged means that the beta testers failed, or bioware failed to listen to them. i can handle broken side quests but main story is just inexcusable.