I done the hull breach then I went on to the hall of souls then I realised why not do court of oryx I thought I could do that to do that 50 kills then it popped up that I finished the quest then i thought what about the moulisim so it jumped to the court of oryx part instead done that part went to Petra gave in the medallion thing but never got the gun? Please if you know how I can get this plz help