So i learned the true meaning of a "Terrifying" zone.
After my
little trading problems with some undead crushing the dwarven caravan, i noticed that just before i close the floor hatch, a mutilated peasant managed to sneak inside.
He interrupted lot of people (it's how i noticed) and i sent my axedwarves to kill it.
I threw the remain in a deeper floor in which i had a corpse and refuse stockpile.
Then i resumed the work on the fort, and again interrupted message, could it be an undead or husk smarter than the other than unlocked my locked ground hatch ?
No it was that damn "mutilated peasant that just came back to undeath, and it was supported by another undead, his arm.
The things managed to cut the arm of one of my hauler before i put it to death again.
Later another interruption, the undead were now several, the returning peasant and his arm, helped by the poor dwarf arm they just severed.
Once crushed by my military again, i started to build a pit to throw those things into so they would never annoy anyone else.
"interrupted" again ! the undead were simply not dying, and after a lot of this kind of thing, they were a lot , not only the original dismembered mutilated peasant was back, helped by all his members, but after a while they killed a few haulers, that now undead were joining the battles.
And to not help, my military was so depressed that they were throwing tantrum and left their stationning, allowing some of the returning undead to climb stairs and attack more of my dwarves.
In the end, the undead won, as i could never manage to complete my pit, and they progressively succeeded in wearing down my dwarves numbers, annihilating both the military and everyone else that i hadn't drafted yet to replace the fallen.
Terrifying indeed is a horrible zone, the undead just can't stay dead.
For once not a tantrum spiral, but an undead spiral, even more lethal.