Bloodthirst is a skill located in the Dual Wield (which can be found in the Weapon skill tree). Bloodthirst is a morph of Flurry
Bloodthirst deals the following types of damage: Physical Damage. Which means that it gets buffed by the following blue champion point trees: Blessed, Mighty, Piercing, Precise Strikes, Quick Recovery, Thaumaturge. Also the following red champion point trees protect against this skill: Hardy, Thick Skinned.