- The Bone Collector
- Collect Broken Bones from other players in Player versus Player combat across Draenor.
- Reward: Unlocks [Gladiator's Sanctum, Level 3]
The Bone Collector is a Garrison buildings achievement. The Gladiator's Sanctum building is required.
This is not noted in the description itself, but you need to collect 4000 [Broken Bones] in order to obtain the achievement.