Originally Posted by NoDiceChicago
Finally got this achievement. Had to do double up on the Hircine items for some reason. I smithed the ebony blade and I think that caused it to not count towards the achievement. After spending about 30 hours on a new character to wrap up all of these quests, getting all 15 and not hearing the achievement bleep... meh, if I wasn't happy drunk I'd probably have put my xbox through a wall.
tl,dr: don't smith any of the artifacts until AFTER you get the achievement.
That's odd, I've never been able to smith the ebony blade otherwise I'd use it much more often. The only place I've heard of it being done before was on a PC where the programming had been changed. How'd you manage it on a 360?