Siege!

Slay 9 Dark Iron Marksmen.

• slain x9

That couldn't'a picked a worse time to ask me to join a fight. my summit's already under siege.

It's nothin' my guards can't handle, but still, it won't be easy for me to pick up and send some dwarves into that infernal gorge.

Tell ya wahat: you take out the marksmen that're holding our fortress under siege, and I'll consider your offer. Ye'll find 'em slinkin' around the flats to the east.

You will receive:

You'll have to do beter than that, <lad/lass>.

If nothin' else, you bought us some time, and some room to open up our supply lines through this siege.

Yer a fine.

Pick up Set Them Ablaze!, They Build a Better Bullet and The Mysteries of the Fire-Gizzard before heading out. The marksmen are all east of Iron summit between the two southern towers.