I've made it to year 4, I think, and 120 dwarves. I think I have a vampire somewhere in my fortress because we keep finding dwarves dead, drained of blood. 😅 And I may have reloaded a save from year 2, to build a wall, because I sorta kinda mined through a frozen river which then flooded my base in late spring that year.
Vampires are wild. I caught the one I had, and he admitted it, and also admitted he was here under a false name. He got exiled from another dwarf civilization for embezzlement. My dwarves apparently didn’t care. After he was punished, they elected him mayor. :D