Just had a migrant wave arrive together with some sort of zombie that followed them in the front gate, killing 5 of them before being put down and atom smashed. But on the way to the atom smasher, a Draltha corpse reanimated, nearly killing the doctor and the 1 trained Axedwarf, along with several others who weren't lucky enough to survive. Thank goodness for the visitors petitioning for residency for the purpose of slaying monsters! If they weren't roving around the caverns I'd be even more F$*ked than now. Caravans can't make it through the pools of abhorrent liquid that constantly rains down, teeming with giant undead rattle snakes, giant undead beatles, etc. For my first Terrifying embark, it's all I wanted and then some. Just awesome.
Edit:
Having no free buckets, all the injured in the hospital (which included the 3 wood cutters) died of dehydration, then their corpses reanimated and killed just about everyone. The recent migrant wave is now crushing all the zombie parts under a bridge until things settle down back to a manageable level. I just hope the 150 booze is enough to last the cleanup. The temple is being deactivated. Praying won't save you from this zombie apocalypse silly dwarves.
Well, the monster slayers did the opposite of help. Sure they killed stuff. But everything they killed was hauled near the fort and then reanimated. 13 of the 23 citizens of "Arrowbreaths" are monster slayers, and 9 of the 10 adult dwarves are slowly dying of starvation and thirst in the hospital. Each time I open the gates to get water, more zombies come in. I'm gonna ride it out though. Maybe some more migrants will be crazy enough to move in and save their bretheren.