The twin sisters Cobalt Widow and Scarlet Widow are the boss of the third region in Blade & Soul dungeon Bloodshade Harbor. Both of them are capable of using the skills of Force Master and Kung Fu Master. You have to deal with them simultaneously, and there is crit time. Therefore you’d better fight them without fail and kill them quickly.
In terms of attacks both of them have a red 360 degrees AOE attack (Scarlets knocksdown, Cobalts freezes). They also have frontal extended attacks as well as stun kicks and knockback attacks Best Blade and Soul Gold Store. These are all fairly easy to dodge or negate.
When one of them is dies she will start meditating (takes about a minute) so you need to kill them around the same time to avoid having to fight them again.
In the next area jump down and proceed forwards. You need to kill the named mob there and then run to the other side. Best Blade and Soul Gold Store Over here you will get a couple of spawns of trash and then another named mob will appear which you need to kill. Once he’s dead the bridge will drop and you can carry on.
Again carry on Best Blade and Soul Gold Store running past mobs (or killing) until you come into a room with 2 destroyers and 3 furnaces on the sides of the room.