There are exotics that currently no one knows how to get. 3 boots(1 per class) 3 gauntlets(1 per class) there is a Warlock helmet too. A Hunter and Titan chest as well. They are in the Bungie.net armory. They're either timegated, cut for later DLC, broken or it's a glitch that everyone is getting Alpha Lupi only with Hunters and Titans from engrams.