Half of my fort is currently destroyed by stress. I've had something around a dozen dwarves die already from depression. Fort's something just under three years old.
I embarked in a nice location save for the fact that it's immediately next to a tower on the world map. The first year everything was going great. We got our first three dwarf migrant wave, bringing us up to ten, then autumn came. Instead of a dwarven caravan, we got an undead invasion. Absolutely unable to deal with it, we needed to turtle. Thankfully, I had just opened up the caverns and had a few monster slayers on staff, so things were looking good.
Then something like a week later in-game, a forgotten beast made out of coral with deadly dust showed up. Casualties were heavy. We turtled on the top side for something like a year and a quarter before being able to scare off the necromancer and pick apart the remaining undead, again with heavy casualties in both monster slayers and core fortress citizens. Without migrant waves and with attrition piling up, we were down to four useful dwarves, all heavily stressed, and a couple dozen monster slayers. Focused solely on feeding the slayers, corpses piled up and rotted around the fortress for lack of anyone on cleanup duty.
When we finally received a migrant wave, it was something like 15 assorted dwarves. Before the next wave hit, two thirds of those had gone haggard with stress with a handful going terminal - either dead or on their way. Two more migrant waves saw some cleanup accomplished and a dilution of the critical stress levels with some healthy dwarves in the fort.
Then another forgotten beast showed up in the first cavern level and killed / wounded a dozen more dwarves. Hopefully this time we're not so overwhelmed that we can at least clean up the mess and avoid the ensuing hauntings, but the stress is already taking its toll on the last migrant waves received thus far.
Finally another autumn has rolled around, and I'm looking forward to our first dwarven caravan in the history of the fort. But of course instead we get another undead invasion, this one quite large - again we're totally unable to handle such a number of undead. Turtling again - and the undead have spilled out into the first cavern layer. At least we still have the second and third at our disposal - and maybe I can even get them trapped down there if I'm careful about it.
IT'S GLORIOUS.