I think I may have by the skin of my teeth, survived the AI deciding it was time for the game to end. Without losing a single colonist.
First there was a hive infestation, then a crop blight, then almost immediately after the crop blight, flashstorm practically on my front door. (thank Armok my walls are stone and I'm built mostly underground), shortly after the flash storm toxic fallout. Fortunately nothing big happens during most of the toxic fallout but it pretty much destroys all my crops and converts the embark from lush forest, to wasteland. Complete with animal skeletons everywhere. The fallout lasts a hair under a season.
I did manage to research hydroponics in that time but I don't have the components to make a big grow farm, nor do I have the power output I need. I've pretty much turned off power to everything but the hydroponics room and the kitchen so that my trickle of rice is not being interrupted. Food is vanishing from the freezer as fast as it's put in. which is good cuz I cut power to the coolers.
Solar Flare
Aand butchering chickens.
I had killed my last chicken and was starting to greedily eye the starting dog when the toxic fallout settled. I scan the now barren map for raspberry bushes and find 2 survivors. They are harvested immediately, I don't have to worry about my scavengers getting taken out by their severe toxic buildup levels anymore, but it barely makes a dent, they probably used as much food walking there and back as the bushes gave us.
And then the AI I think was running out of ideas and decided to tried to send one more 'fuck you' my way. Alphabeaver horde. First off, 'take care of them before they eat all the trees'.... What trees? I've seen desert biomes with more trees than what is left after that mess. And second, thank you. I drafted everyone and waded into the beavers like some horror movie teenager beavers sneak into theatres to watch and brought the meat back.
Winter is just starting, but it's a relatively warm biome, so I think I'll be able to live off beaver meat and rice long enough for some boars or deer to stumble on the map now, and my crops should still grow, probably just slowly.