Many of the 'blue' quests are to kill a particular rare (silver dragon portrait) mob.Other users report that war campaign/invasion quests do not count at all for this achievement.Each of the pet battle world quests is unique, so if you know you haven't been hitting those up, you can knock out quite a few that way.each time you do the Tortollan 'Beach Head' world quest in a unique location, it counts as different. From my experience, the world quests that have the same name but are in different locations count as different in each location-i.e.
Here are some tips from looking around myself: Also a 'blue' quest does NOT mean you have not done it-it merely indicates the rarity/difficulty level/reward quality of the quest. As another poster mentioned, there is an app you can install to track it, but you have to have done so before starting the achievement, which I'm guessing is relevant to very few people who have ended up on this page. Comment by maitriUnfortunately Blizzard doesn't seem to provide a way to know for sure which world quests you have and have not done, even though they must have this data saved for them to be able to track it.
