Journal of Gizogin, Rawmancer:
Actually, I don't have any creativity today, so I'm just going to relay everything that happened, without trying to be in-character.
Starting seven: Gizogin, Deathsword, El Presidente, CatalystParadox, ThatAussieDwarf, DevilEd, Dinjoralo
I got everyone underground right away. Then nothing happened for a while, so I decided to risk sending a couple of dwarves (Dinjoralo and Catalyst) back to the wagon to grab supplies. They got almost everything in, surprisingly, before being interrupted by a buck rabbit corpse. I drafted El Presidente (I gave him some military skills on embark), and he caved its head in with a single punch.
Meanwhile, I had the others digging out some more space, planting more food, and building more workshops. By the end of the second month, everything from the caravan was underground, along with a few other bits I decided to claim, and we had most of the food-related workshops built. Then a raven skeleton found a hole in the wall and started scaring everyone, so I called El Presidente back in. He dealt with it swiftly (seriously, the guy's a machine).
I then dug out an underground refuse stockpile, because I knew that a surface one was just asking for trouble. I also called everyone back inside, and sealed up the entrance. Then I realized just what an idiot I am. Catalyst, Dinjoralo, and El Presidente were all rotting alive, along with a cat and our horse and moose. They were just spewing miasma everywhere, until they eventually died as their lungs disintegrated. Some combination of that fetid muck and nefarious mist is, as I should have learned from Aussie, ridiculously deadly.
Interestingly enough, Aussie himself is ecstatic. No idea how that works.