Spoilers ahead for anyone who hasn't done any deep digging or spent more than 15 minutes on the wiki
So, I'm curious about reports of gasseous/liquid demons/other entities moving through fortifications. Checking the wiki, the information on carved vs constructed fortifications seems to imply that constructed are the ones that would have this vulnerability, (the wiki seems to say that constructed fortifications are treated as 6/7, but carved are not?) but don't both allow the flow of water?
The reason I'm asking is I encountered HFS using the fortification peek method (find adamantine, smooth it and use fortifications to peek inside). I had a lever set up to a drawbridge gate to seal the adamantine mine off, but alas, the steam demons (one of the generated types) were rapidly making their way up the funnel, and even got within eye contact of a dwarf who was trying to escape and caused the Horrified status, before he had any real chance to escape. At that moment, i thought that at least he was dead, the lever was just a dozen ticks away from being pulled. But then..... the steam demon (and his 100+ other friends, a dozen or more also steam demons) just kept charging up the shaft, all the way to the top.
Now, I know that when they have nowhere to go that's what they do, just charge all the way to the top and possibly even get bugged pathing, but shouldn't the gasseous demon have been able to just go through the fortification and boil some dwarf fat? Am i missing something?
This is also actually my first time encountering and processing adamantine. I've had good luck with steel in the past and gotten focused on steel industries before inevtable fort failures from other causes, but this time I had to dig down FAST just to get any workable metals... hence the adamantine. My last 6 (failed) forts have all had awful luck with flux stone, and this one doesn't even have iron, let alone flux layers. Maybe I should just turn minerals back to default instead of frequent?