I have not achieve double barrel yet, but this is its skill which i translated my self from a taiwan website. (Idk the skill name but i know what it does) First skill:shoot while jumping to the left, can be used when jumping. a)balance type b)lesser sp use 16 (original 19) C)shorter cooldown Second skill:have no cooldown and shoot at all direction, 1st shot infront,2nd shot hit left and rightm 3rd shot hit mob behind u.maximum 3 hit. a)balance type use 19sp insyead of 20 b)longer distance c)increase power use 23 sp instead of 20 Third skill: shoot infront at a fast speed can hit a single target 5 times(no branch) Fourth skill:HIDDEN SKILL:no description on website Passive: no description i will add in passive and hidden when the website update. (Pardon my bad english) ohh 1 more thing, im not sure about this but it seems like all of its skill can be used while moving cus this is what the description say" a class that use dual weild 1 hand gun, can move freely while attacking."