Lifetime Survivor bugged
Came across a page on the wiki a while back that had mention of this issue.
It seems that as it is now (and was then with the Monthly achievement of Survivor) it cannot continue to stack the experience you got without dying if you’ve logged out or traveled into instances (e.g. a personal story quest). Not sure if this is what causes it, but it sure was the issue back then. It might be wise to try and see if you can find a place to race this stack of exp in one go.
Atm, logging out and map change still reset the XP counter, as well as stacks of bloodlust. Would be really nice if you could do something about it, since it makes this achievement kinda boring if one has to grind the same area over and over again, especially if there are no renown hearts left to boost the XP gain…
It is bugged for me too. Needed around 90K XP for Tier 2 of this achievement, then logged out and when I came back on it did not progress.
Do not click this link!