Kill 12 Thrashtail or Ironjaw Basilisks.
Ahem! Hrm, hrm...
<The dwarf clears his throat for several seconds.>
You're lookin' fer somethin' ta do? And ya come askin' ME? Lowly ol' Goris?!
Well, ah... this is a first. Ah, I've got it!
The vale ta tha north is filled with a bunch o' useless, belly-scrapin' basilisks. They don't do nothin' for no one, and I hear they turned a guy ta stone once.
If ya kill 'em, I'll give ya some o' my stuff.