Having trouble getting this? Dying a lot, pretty simple to do. If you were like me then you skipped out on dungeons. If you finish one dungeon explorable at level 80 you get 129k which is more than enough to get you the 100k that you need without dying. Pretty straight forward thought i'd inform people on it.
So essentially what you do is!
Go to CoF which is the easiest EXP mode from what i have seen, plus everyone is grinding it for gear.(Magg Option)
Finish it you get 129k xp
Boom achievement one Experience Survivor "Get 100k xp without dying"