While duel wielding
- Increases off-hand Weapon Damage by 15%. (2 ranks)
- Unlocked at Dual Wield rank 10
- U1:Updated the tooltip for this passive to display how Weapon Damage it actually increases Weapon Damage 
- Update 1: Slightly increased the bonus damage granted by rank II of Dual Wield Expert.
- Update 3: This passive is no longer lost when you die.