Well nobody knows what's up with koffin WQ. According to Boon, it's a glitch, but who knows, he might be lying about that as well. As for the headband, when you enter Earthrealm (before you go to Edenia I think) talk to the Masters Shen and Wen and he will give you the White Lotus Headband and asks you to investigate some people t around where the portal is. You'll see three Baraka's over there, just talk to them and you'll fight one of them. Then, you go back to Shen I think it is, and he tells you to investigate the matter further to see why the Baraka's came to Earthrealm. Now this is as far as I got. I figured since it was Baraka that attacked, that I'd go talk to him in Outworld to see if he had anything to say but it was a dead end. If you finished Konquest, then I think you missed this though. But as for the other missions, I don't know what you're talking about so. Good Luck.