Does the count towards an achievement start after update or does it simply take in to account current numbers? example: If you have killed 30,000 mobs do they count towards the 100,000 for the crown or do you start from zero.
Meritorious deeds related to seasonal events.
* Applies only to seasonal events held after the release of patch 1.20.
Sounds like (since they only include the caveat to Seasonal Events) all existing qualifications will apply to achievements once they go active.
Sounds like they are quest locking them for now. We will have to talk to an NPC to acknowledge any achievements we qualify for to start using the achievement system:
At first, only the names of achievement categories will be visible. Each category must be unlocked by speaking to the corresponding NPC, after which you will be able to view the details of individual achievements under that category.