Stravhs | Chapter 7 The Banner Saga Guide
Last update: 11 May 2016
After you reach Stravhs listen to the conversation between Rook and Juno (you need to deplete all of the dialogue options), from which you will learn that Bellower can be tricked and defeated with the magical silver arrow. Wait for the available actions list to appear. I recommend that you select the second option on the list (Climb higher where it may be easier to remove) and then, the first one (Look for another piece), because after you return to Boersgard you will receive a valuable artifact named Stravh's Whestone. This item doubles the amount of damage that you deal so, it is a good idea to give it to one of the stronger characters in the party.
Note - If, in spite of my suggestions, you have chosen a different variant, nothing bad will happen, but you will miss the opportunity to obtain this item.