A bronze colossus showed up at the end of the third year. His first official action was to smash a brain out of its related dwarf. Both, brain and dwarf were kicked several tiles, giving me a first impression of the colossus's desstructive mania. As my mitlitary melee dwarfs only were equipped with weapons but not with reasonable armour, I decided to range kill that bastard.
I lured him into my "fighting area" where my crossbow dwarfes could shot at him while he wasn't able to reach them. So he stood there and did nothing, while my ranged dwarfes fired a hell of a lot bolts onto him. All bolts glanced away because they all were made of wood or bones. One bolt that was made of bismut bronze (dont know where it came from) chipped something but that seemed not to bother him in any way.
That annoyed me and threw my meele dwarfs into fight (clever or not). At least they were equipped with metal weapons and some clothing shreds they called a "leather armour". To make it short: They killed Dr. colossus after a lot of fighting rounds, but one meleedwarf were hurt very serious. Iam afraid that he will have to lay down in a traction bench for the next couple of years.
funny side fact: Chief medical decided to have a extended break, when he was needed at most.