I handed in all my quests last night from clearing Emerald Nightmare, and it didn't advance me any further in the questline or give me an artifact appearance. Was I supposed to get one? I thought you needed to finished the quest to collect 30 essences from bosses as well, and that won't be done for quite a few weeks. So does it actually matter if you get it completed this week, next, or even 3 weeks from now? It's going to take at least 3+ weeks to collect all the essences.