Question about the "The End is Nigh" quest.

Hello. I was wondering what the "The End is Nigh" quest is for? I suddenly saw that it had "updated" in the messaging panel I just don't know what to do.

I'm guessing it has to do something about the victories mentioned in the "Goals & Achievements" section in FAQ, but I don't get how they work exactly. Do only the global top players in each category win? Does everyone win in the category they progressed the most in? Do we have to fight, and all of the survivors win in the category they progressed the most in? 

I'd love to see some answers if anyone has details regarding this, or something related to this. 

Stay safe,

- SHOx 

Isn't there anything to achieve with that quest? I've been talking to refugees, meeting the 4 horsemen, extinguishing the fires, breaking the crystals, all for nothing?!?

I suggest something : maybe extinguishing fire could add 10 or 15 more days. This could be very interesting to finish a victory, for instance. Extinguish fire could make smoke in towns disappear until the next day, for instance. NPC (Non-playable Characters in towns) even could have new dialogs to express they are relieved for a while ;)