"The Forgotten Beast Adur has come! A towering lizard with lidless eyes. It has a spiral shell and it has a bloated body. Its scarlet scales are oval-shaped and close set. Beware its deadly dust!"
Normally I wouldn't mess with a duster, but circumstances dictated otherwise. The monster squads arrive quickly with backup, two squads of five speardwarves and two squads of five marskdwarves. The scarlet shelled lizard shows up and starts knocking everyone around with dust, which turns out to cause full-body blistering, rot (temporary, which seems odd), and loss of vision. There are now eight sightless militia dwarves wandering around and Adur is sauntering up to the central staircase, when abruptly, down it goes. I figured it had bled out or someone had gotten in a lucky stab, but no.
One level up, behind fortifications, is Zas Alilfikod Kanshetbeth Goden, legendary marksdwarf and militia captain who has not killed anything in 13 years since getting a mild but permanent hemorrhagic fever from another FB back in 277. Zas always arrives late to the party these days, but here he was, and for the first time in over a decade, bam. One steel bolt to the brain. The thoughts say "took joy in slaughter," but I can only imagine him saying "hell yes, still got it" as he slings his crossbow over his shoulder and heads back to the barracks, trailing a little blood from his fever.