My spear assassin Kira Videl has become the first Legendary Survivor to beat all three campaigns... with 0 deaths! I played casually for less than 3 months. My guild can back up this claim since they were with me at each endgame. Just ask Racthoh Demini.
Before the last double exp skill capture weekend we had, I was at around 675,000 experience or so, doing missions and quests. The skill caps got me the title.
Then I began working on beating the campaigns. First was Factions... I misplaced the pic but I'm now wearing the 15k Canthan chest piece, which you get after killing Shiro.