Been wondering this for a while now, how many of you guys use a danger room when playing this mod?
I tried it without danger rooms and all civilizations enabled. I only had one solid military victory in the history of the fort.
Things did not go well. The militia of Airletters had been crushed at every turn and I was down to two mostly able-bodied squads of ten that had only mediocre skills because no one lived long enough to hit legendary. They trained on captured invaders and even forgotten beasts but it just wasn't enough. They'd lose someone every battle and that dwarf would be replaced by someone with no combat skills.
I gave up on using melee for most engagements. I gave up on marksdwarves as the first line of defense because I couldn't make enough bolts to keep up and elite bowmen would slaughter them anyway. Everyone hid behind a reciprocating spike field, a drowning trap and what was supposed to be a steam generator. The steam generator was the undoing of Airletters. It was the end; Jotunar and blendecs were bumping into foolishly, desperately placed weapon traps around the steam vent and raining down into the guts of my engineering sector.
The Jotun and their kin lined up outside the last masterwork security door keeping them out of the engineering workshop/lever room and began breaking it down. On the other side, I assembled all surviving dogs in front of swordsdwarves in front of marksdwarves and waited.
The Jotun came through and turned the first wave of war dogs into chunky salsa, but while they were doing that the barely trained marksdwarves managed to chip enough bones that most of the Jotun fell over from pain. The swordsdwarves and even more dogs dogpiled them, slashing and biting repeatedly at their giant helmeted skulls without anyone being able to reach the brain (all the speardwarves were dead at this point in the short history of Airletters). The mayor, who had been conscripted on the basis of being one of the last able-bodied dwarves, managed to punch a blood cyclops in the head so hard its brain was torn and then began tantruming because his dog had just exploded right in front of him. Slowly, the giants and their blendec/beakwolf assistance was crumbling.
One of the Eldjotun ran through the melee and headed for the central stairwell. The marksdwarves, who only had a couple of bolts each when the Jotunar kicked down the door, began running out of ammo and trying to bite and bash the giant to death while all the dedicated melee was distracted - with success! Just imagine this huge giant being bitten to death by a swarm of tiny dwarves. With the last Jotun dead, satisfactory victory was declared. The only casualties were a couple of dogs, the mayor's sanity and a raw recruit who somehow had his arm ripped off by a beakwolf before he bit and stabbed it to death.
... then I tried to clear a couple of parboiled tigermen out of the steam generator drains. They fought like, well, scalded cornered cats. I thought I could take cats after having battled Jotunar and blendecs, but they turned more dogs into salsa and then took on my melee one at a time in the narrow corridors. One of my starting seven, the proficient biter and teacher I'd brought with me who had trained half the fortress in biting, was among the dead.
With almost every single dwarf in the fortress missing at least an arm, the militia deprived of its leader and the source of its incredible biting prowess, the plans for a steam generator unsalvageable and the tantruming mayor replaced by an annoying armless lye maker who demanded giant cave spider silk items when there hadn't been a trade caravan in five years, I decided to order one last glorious charge at the blendecs blocking the entrance and call it quits.
This mod is awesome. Impossibly hard, but awesome.