Master Fletcher
Very rare3.6%GrindOptionalSingle-player
Craft 25 of each special arrow type (Fire, Grenade, Poison)
Craft 25 each of the three special arrows - Fire, Grenade and Poison. A grind of field-crafting: gather the mats (cloth and oil for fire, etc.) and make them in batches. Use them freely in combat, since you'll be re-crafting anyway, and the counts tot up over a playthrough.