Bone Breaker is a non-canonical Valyrian Steel Polearm class weapon appearing as an axe. It was previously won as a quest reward, but is now replaced by Legbiter.
- Speak to the Tattered Prince on the second floor of the castle in Tyrosh.
- Find Bloodbeard, insult him and leave the city.
- Defeat him and The Company of the Cat
- Return to the Tattered Prince to obtain Bone Breaker.