Silver Sword (Mastercrafted): The Fiend Of Kimbolt Way

This diagram requires a journey to the southeastern part of Velen; deep within Crookback Bog territory. From the signpost of Kimbolt Way, run down through the hamlet (overrun by a few unruly bandits), and then into the marsh ground to the south. Look for the large oak tree where someone has built a rickety den. The place is guarded by a Fiend.

With the Fiend defeated, you are free to look over the remains of two bandits who made the mistake of disturbing this beast. Loot the corpses in front of the locked den, so you may take the key that opens the wooden door. Read the notes if you want to be slightly depressed. Inside the den, raid the chest.