My fortress, Lakesmirrors, has been doing good. We have near infinite iron (Not great in this version), although no way to produce bronze and steel. We have a legendary armor and weaponsmith, so practically all of the military is rocking out with full sets of masterwork gear and they all have absurd fighting stats, although because of the way my game seems to be bugged, they don't train armor, so I have many "Novice armor user/shield user/legendary speardwarf/legendary fighters." Everything else is good; grand master gem cutter , grand master gem setter, a couple legendary carpenters, a couple legendary furnace operators/wood burners, a legendary mason, a legendary engraver, a legendary farmer, etc. Basically, my fortress got absurdly lucky with grand master migrants, and it's nearly completely self sustained.
Then, my military, going to clean up a wave of Elk Birds that were plaguing the caverns (by which I mean being next to each other at the edge of the map in a big group), discovered something. A forgotten beast, an eyelidless, poisonous capybarra, sitting in the water deep below. It swam off screen, and then I waited, not exploring any more. Checking the monsters screen, it showed no new info, just a beast with purple hair determined to murder me with eyelidless poisonous bites.
Then, I heard strange messages. The forgotten beast has stopped being enraged! appeared multiple times, along with an couple instances of "The soldier ant spearwoman has bonded to *tower cap shield*!" I figured there was some kind of infighting going on down below, and that the beast had murdered the soldier ants.
Then I explored deeper, feeling more confident about my military, and figuring if I died, at least it would be fun. I spot the beast, separated by deep water.
Every bone in its body, every organ, every toe on all four legs, its eyes, its eyelids, its mandibles, EVERYTHING, is either red or cyan. There are two dead soldier ants and the one lone spearwoman, with one broken arm. She's been fighting, since I saw her, for three months and two hundred pages of combat logs, and the beast itself has over three hundred pages of scars from her wooden spear, which is somehow not worn down. During the fighting I've seen, she has collapsed from exhaustion over two dozen times, but rises up to continually stab the barely moving creature.
Soldier ant woman, I salute you, for doing what was supposed to be the job of twenty armor plated dwarves, with merely a wooden stick and a couple of friends.