Hi, I've been on the final step of the boltcaster quest this whole week, every time I get to the end of the strike (4-5x) I have done exactly what I was supposed to do, whittle down the darkblade and the wardens then kill them all within 30 seconds. I have done this multiple time but every time I do it, the quest doesn't finish and says that I have only killed my warden and not the darkblade. What should I do? Please help, I really want my boltcaster.