Completed a Crota's End run without anyone dying, no trips to orbit, no one joined the team mid run, stats from the run verify it, yet my Flawless Raider Achievement is still locked? My team attempted it for the sole purpose to help me get Flawless Raider. I also recieved not one single piece of armor or weapon from the entire raid. Only radiant energy, shards, the emblem and Cryptographic. What gives?