Sorry, I've been out for a time!
Now, I just came here to finish the story:
So, after that saving wave I just worked things out, as I should. I focused on expanding my fortress and defending it of a siege. I couldn't make an army because I had no expedition leader to point it out. Not big deal, I just had to wait for it.
Well, it took me way more than I expected, and something that I didn't count on happened:
I've got sieged by a necromancer.
Now, beyond the hope of making an army and knowing the siege wouldn't be leaving soon I had to work around with food and drinks. I had around 70 meat, a good water reserve in the well and a lot of seeds, so I didn't got too much worryed about hat. I've got two artifacts: a figurine (that kid, from before the siege), a throne (after the siege started).
When the "wet season has arrived!" I discovered it was just as dry as the dry season, and after some time my well got dry. I assume I was incompetent with the farming, and also my plump-helmet farm was destroyed by the magma (when I didn't know Kogan would survive and tried to flood the fortress with magma just for fun before It crumbled). Then, every animal that hadn't died from hunger (no grass left) became a pet for some dwarf.
One dwarf tried to make an artifact, but he needed bones. I couldn't kill any animal, and I couldn't open the gates neither. So, I checked his status and he was some sort of cool guy, who would prob get melancholic if he couldn't get some bones, so I didn't worried. He went berzek, and since I hadn't nobles yet I could only pray for my ranger stop him. And he did, without losses. But well, people got sad because he died and all. So, sadness started to spread.
Then my only option was to dig. I tried to dig another way to the cave and gather the plants there. Of course that barely worked. So, just for the fun, I kept mining. And when I found the next cave I've got an announcement I never had before: Adamantite. I got excited, that could make some nice furniture who would make my dwarves happy. So, I started digging it. And then, some new announcement...
And there's where I am. The morale is that, kids:
If Kogan had died the fort would have been abandoned. But when the migrants arrived they found a barely-alive kid who gave they a motive to keep that fortress alive. And now, because of the willpower of that kid, hell has been unleashed over earth. Pretty cool, if you ask me.