I got my first Gjallarhorn when I was doing VoG on normal, I jumped off the middle platform and launched a rocket point blank, killing myself. Atheon went down a few seconds later. Then it popped up. It was a weird moment. I didn't believe it at first. Thought that maybe someone else got it and I was just confused. Then I looked in my invintory and there it was. Could wipe the stupid smile off my face until I fell asleep an hour or so later.