Halloween Huntin'?
Yea it was from the broken doors. Which are now fixed.
There are events that spawn numerous foes, you can get 10+ tags off them if you are lucky. But it seems to be entirely random when you get it.
Biggest event I’ve encountered was a candy corn one. There was a lot of people around so maybe that affected it. But it spawned at least 20 mini eles and then one veteran. The ones that spawn plastic spiders and Skeletons aren’t near as numerous.
Doors do spawn in the same places, but I think its random on the timer.
In my server (HoD), there was a small zerg farming haunted doors near brigantine waypoint in Gendarran fields.
There are 5 doors constantly spawn this area.
Within half an hour, I completed Halloween Hunting achievement.
Also i recieved like 50 ToT bags.
Maybe you can find smilar zerg in you server.