First evil fortress, only about half the map was evil, the other half was quite nice looking.
Nothing especially bad wandering around, animated corpses but they went down pretty easy.
Unfortunately I messed up in the process of digging out lignite and breached the aquifer (it only covered half the map, the evil half) and flooded the metal working level as well as all points downwards. Emergency patch jobs made things worse and killed half the fortress, the rest started tantruming.
I found lava down below and was preparing to migrate everybody down there when Giant Elkbird Corpses attached and killed another 25% of the fortress.
At that point I realized that my emergency drain had filled an entire cavern level and the water was rising in the second level, that's when I said to hell with it after contemplating the upcoming FPS issues and abandoned.
It was going great up till then, too.
I was at the point of sealing off the above ground areas and subsisting down below (for the first time, I'm still a noob here), had a military that could actually kill something more threatening than a groundhog. It probably would have helped if I'd thought a little more before putting my refuse pile in the evil half.
Oh well. There's only one thing to do! Another evil embark!
(Good/calm embarks lack definable challenge, the challenge is in keeping the 200+ dorfs happy, macro sized micromanagement is less entertaining than it could be)