Slaying Sandspikes is the Kill Quest for chapter 10 of the Dwarf WAR story, On the Trail of a Legend. The Kill Collector for this quest is Bragni Tunnelcut, who can be found at Norrikson's Excavation, in the Badlands.
In Progress Edit
We'd be moving along a lot faster if it weren't for them bloody Sandspike Deathbacks. Might even have time for some profitable mining along the way.
Kill the lot of them lizards, and you and I can do business.
On Completion Edit
Right! Now you got the idea! But if you're gonna be my partner you'll have to really put your back into it, see?