Hi: Classes use warlock. SubClasses use Strand. Sychronic Roulette-Submachine Gun for kinetic weapons. Vexcalibur-Glaive for Energy weapons. Semiotician-Rocket Launcher for Power weapons. When playing the Witch Queen Campaign, sometimes I suddenly cannot use the Strand charged melee. The situation is that when I press the charged melee button, the melee icon in the lower left corner flashes red. Later I found that after using the uncharged melee once, the charged melee can be used. I have to use this method every time a problem arises. I switched to Judgment of Kelgorath-Glave and still had the problem that Strand charged melee could not be used! But I'm not sure if the problem is caused by using Glave. I tried reset key bindings but it couldn't be fixed. please help : )