Yes, it is possible. I know I've had it since my second play through way back near the launch of the game. --- My dear mortal, don't you realize? The secret to my winning this board is the fact that you can grow without limits while the others never surpass theirs.
Have you gotten the skeleton key already or have you not progressed that far?
I've already completed the thieves guild quests. I even had 16 daedric artifacts in my inventory at the same time. --- http://psnprofiles.com/TheRavenKC Play Like A Raven http://www.xboxgamertag.com/search/TheRavenKC/
The Rueful Axe dosen't count, I don't know about the Key, I know both of Hircine's artifacts count. --- Currently Playing: Skyrim, Fallout New Vegas, Fallout 3, NFS:MW 2012 Currently waiting for: GTAV, LR:FFXIII, Grid 2
1.Masque of Clavius Vile 2.Spellbreaker 3.Azura's Star 4.Oghma Infinium 5.Dawnbreaker 6.Volendrung 7.Mace of Molag Bal 8.Ring of Namira 9.Wabbajack 10.Ebony Blade 11.Mehrune's Razor 12.Skull of Corruption 13.Sanguine Rose 14.Ebony Mail 15.Savior's Hide --- http://psnprofiles.com/TheRavenKC Play Like A Raven http://www.xboxgamertag.com/search/TheRavenKC/
Try droping them all and pick them back up or something? Dunno, never got arround to geting the Achivement my self and I've had this game since midnight the day it came out lol. --- Currently Playing: Skyrim, Fallout New Vegas, Fallout 3, NFS:MW 2012 Currently waiting for: GTAV, LR:FFXIII, Grid 2
The Skeleton Key does not count towards this achievement.
Even if you get rid of one or all the artifacts, you should still get the achievement because the game tracks how many you have had in your possession. --- Zelos Wilder: "Demon Fang! Demon Fang! Demon Fang! Damn, I must be a genius! Double Demon Fang!"