The character has significant experience with two-weapon fighting, gaining +2.5% melee critical chance, as well as allows the character to inflict bleeding lacerations in Elite and Boss creatures dealing (2+([character level]/5)+1) damage every 1.5 seconds for (2+([character level]/5)+1) seconds. Maximum damage and duration in origins is 8 damage and 8 secs. Maximum ticks will be 5. Maximum damage and duration in awakening is 10 damage and 10 secs. Maximum ticks will be 6.
If the character with Dual-Weapon Expert has a self-inflicted damage sustainable activated (Aura of Pain, Blood Thirst and/or The Tainted Blade), Dual-Weapon Expert begins to deal damage over time to the character. The appropriate icon appears over the ability bar. An unofficial fix for PC is available here.