So basically, me and a couple buddies were going for the onyx medal (which we got 1 or 2 games after this happened) and we got all the way to the end to the actual last Onyx guard and got a glitch where he was invulnerable to damage. I really don't know how to explain it, but I think the recording will explain the rest. http://www.youtube.com/watch?v=tNAve...el_video_title

Figured this was the right section, if not sorry.