Lifetime Survivor
It should not. Changing maps will reset it, though. That includes logging out, entering an instance, etc.
Good luck.
You need to raise the full amount of experience, without going down and all in one go basically. I’ve gotten it on my warrior and he’s been downed easily over a thousand times
Here are some tips (and confirmation about being downed) you can use to achieve this Title: http://wiki.guildwars2.com/wiki/Talk:Hero_%28achievements%29#Lifetime_Survivor_Achievement
Good luck.
Just level cooking. I think you only need to go 200 levels to get that achievement.
Something else you can try now. Just save up all those Writs of Experience from the PvE dailies, then consume 20 of them in one go. I’m not sure if this works, but if it does, that’s the surefire way to get it.