Completed my surface walls and raising bridges just in time as a 30+ army of undead lead by some "Goblin Lasher gaunt slayer" (i guess it's a husk ?) decided to pay a visit .
Lost a couple of dwarves that were unfortunate to be between the alerted burrows and the undead entry point.
But after locking the fortress thanks to the raised bridges, my 40 dwarves (15 of them being childs/babies) are now stuck but completely safe, fortunately water and food will not be an issue, but still the undead do not seem to be willing to leave.
So i'm still waiting for the animals to slowly hurt the undead to reduce their numbers (all the animals are [Crazed] in that world so they attack the undead when they enter the map), i guess i'll have to start a weapon producing industry soon, as most of the time have been wasted in making the fortress perimeter walls and the giant floor on top to serve as roof to stop the berserked raven i don't have anything worthy yet.
After waiting and waiting there are now rougly 140 dead animals and no undead is dead again, still no caravan with armed escort coming to visit.
Man it sure is taking time
edit : oh boy the disaster.
As there were enough dwarves that were haggard and oblivious already from being confined or from some memory of being scared or under the rain , i decided to expel all of them to avoid problems when they would die leading into more haggard/oblivious dwarves.
Then, checking where the undead were, i decided i could have the lever pulled , so the banned dwarves would leave, then lever pulled again to reseal the fortress.
Worked well, but the fortress dwarves ignored my "pull the lever NOW!" order for long enough so 1 undead managed to find his way inside the walls before things got sealed again.
I didn't had enough weapons, so the drafted dwarves (the whole fortress) probably were just going with punch and kicks.
The lone undead managed to kill most of my dwarves, only a couple able (as in not child as them were all safe in the underground) dwarves were left alive.
As the waiting game wasn't any fun already with none coming and weakling [CRAZED] animals doing no damage to the undead, i decided to abandon the fort, hopefully the survivor would find a way into my next fort.