Therefore there are a possible 16 that count of the 15 required Artifacts to unlock this. And although you can only obtain one of the two Artifacts from Azura, you can gain two Artifacts from Hircine.
Also the Rueful Axe from the Clavicus Vile quest does not count either and so they will not count towards this achievement. The Skeleton Key obtained from Nocturnal is during a Thieves Guild quest and does not count as an Artifact. There are a possible 19 different Artifacts, but only 17 are obtainable in one playthrough and the achievement does not carry over through multiple playthroughs. There are 16 Daedric Gods and each one has a quest attached. You need to collect 15 Daedric Artifacts for this, you do not need to possess them all at once so you can sell or store them away as you get them.
