I tried 8 times but give up trying to solve it on my own, in the "pyramid song" mission I was supposed to win the "mox" weapon at the end of it, in all the ways I tried, it doesn't appear where it should appear, I tried after complete the "scene" and talk to Jude to go on missions before going to her house, I did 6 missions before going there, I spent more than 3 weeks and still the gun doesn’t appear where it should be and nowhere, I'll have to take it with a console