Okey so something happened in my fort that i never had before. Anyways, I've started fairly good, established nice food income, had such a nice fort layout like a mountain hall carved into the cliffs overlooking the plains to the west where i groomed my cattle and stuff... Than suddenly, so early in the game, a freaking were-mammoth thing appeared out of nowhere. It was so early i didn't even build my gates! I organised my 20 dwarfs to fight the beast with all weapons available (that would be 2 bronze axes). They jumped on the creature and started biting and chewing it, but body parts of my dwarves flew all over the fort (literally i found a torso on top of an unreachable chicken coop). 2 dwarfs survived the carnage before the beast bled out somewhere inside my fort. It turned back into its dwarf form, but the body never decayed, its corpse just stood there all flashing blue. So the remaining two dorfs build a wall around its corpse (heck this is the first time i've encountered a werebeast i dunno if they come back to life or smthing since its body didn't decay). And the two of them started building an epic memorial site for their fallen comrades. In the meantime a lot of migrants came and then i remembered - oh i should build a gate really.
But it took so much time for them to finish the gate and just before i linked the gate to the lever -- a night creature showed up. Again, no gate. It was a werehyena this time. Organised my dorfs, went to fight it with bare fists and bare teeth... meh killed it relatively easy. Left a few dwarves dead, and a few bleeding to death (since i sold all my medical supplies in preparation for the jurney... really needed that fisherdwarf). And i finally finished the gate! NOW i was safe finally, no more night beasts in my fort now when i have some sort of protection, oh no more of that yeah.
The merchants finally came to visit us. Finally i can buy some steel axes and shields so i can fight off these horrible beasts. As the dorfs were carrying their stuff to sell them i accidentally notice a HUGE splatter of blood just where the merchants were suppose to be. Yeah.. It turns out it was full moon, and my dwarves got infected! 5 of them infected to be precise... They wiped out my fort in like a milisecond...they even killed the children! Meh, screw children, they killed my puppy colony! And than they just turned back into dwarf form...
And now what? Has anyone tried to actually play with a werefort? And I have a new migrant wave coming... They'll love the smell since the entire fort is a damn miasma cloud atm, but thats the least of their problems.