Nothing much happened in the first half of the season. The zombies killed a few wild boars, and we have gem weapons and armor for every remaining dwarf, should the need arise. Meanwhile, work on the cage trap corridor went on and on.
Finally, when it was deemed long enough, I've ordered one of the miners to ramp up to the surface, luring the undead creatures in. That last part went a little too well: before the poor soul could make it safely back in, he was mauled by an undead troll. Apparently, he didn't bother looking around before ramping up, the troll was right next to the newfound entrance.
The zombies started mindlessly funneling into the corridor, it worked like a charm. The first group, I think fifteen or so, were captured without issue. Those were mostly goblins, and a few dwarves, along with the troll that killed the miner... not the worst we have up there, but not bad for a first try.
The rest of the zombies decided to stay safely away for the time, and some of our overenthusiastic dwarves thought that woudl be a good opportunity to reload the cage traps. Obviously, it was not: the zombie elf at the top noticed them, and went in after them. Honestly, that was the fastest zombie I've ever seen - the two mechanics sprinted back down the corridor when they saw the elf corpse, but since the first 15-20 cage traps were full, the undead had a decent chance of cathing them, which it did. Sure, during the fight, a cage trap finally got it, but not before breaking the leg and hip of one of the mechanics. The other one hauled the injured guy back to the hospital, and that was that.
After that, we've managed to reload all the traps, and group every captured prisoner into one giant cage. We waited a few weeks, but the undead didn't seem to mind us much, at least not enough to take another charge at us.
Then, Meph built a few decoys, and placed them at the turns of the trap corridor. Somehow, that (or the mechanics who placed them) got their attention, and the remaining zombies flocked into the traps as well.
Unfortunately, I calculated that fifty traps would be enough - after all, there were around 60 zombies to begin with, and we caught 14 (I counted since the latest entry) of them with the first wave. Of course, since then, the necromancer raised a few other nasties, namely wild boars, pandas, various body parts. This had predictable results.
Luckily for us, the really nasty ones were caught in the traps, only a zombie wild boar, two goblins, and a few body parts made it in. Those still managed to cripple a few of our farmers (who thought it would be fucking important to harvest plump helmets during a zombie invasion), but Higginbottom led the remaining survivors in a counterattack. With gem weapons, it was brutal, even with a totally untrained 'militia'*. Higginbottom got one of the goblins and a reanimated dwarf leg, the two novice wrestlers ganged up on the other goblin, and the others took care of the small fry, with Higginbottom helping out here and there. There were casualties of course, but honestly, I wasn't expecting all this to go down clean.
All in all, when the dust settled, we had three permantent cripples, one of the wrestlers, Higginbottom, Meph, and one miner. Oh and me, but I don't think ghosts count for much as population goes. Everyone else is dead, the zombies captured or slain, but the necromancer was still out there. Four healthy dwarfs and three hospital patients can't be considered a fortress in my books, so I've ordered the survivors to construct a wagon from the few remaining logs, pack everything valuable they can carry, and leave this hellhole for good. With a bit of luck, they can reach the mountainhomes before they die in the wilderness.
As my last order as overseer, I absolutely forbid the burial of my body. I'll depart this site as a ghost, and try to find myself a new body. I'm sure there's an unconscious soldier somewhere in this world. It would be really nice to join a real group of warriors this time.
*That means every remaining citizen who was not hospitalized