Hi all I have done all the quests except only cure. Will I get the achievement for 15 daedric artifacts held if I did not get the masque from daedras best friend, I got the hammer.
But I have used the skeleton key which is a daedric artifact.
Any help would be great thanks!

Please do not post Spoilers in General.

People come to General to learn about the game without learning about what happens in the game. If they want to know about what happens, that is what the Cheats, Hints and Spoilers section is for.

Do not use quest details or location specific details related to quests/puzzles/NPCs in your posts in this section. General is for discussing gameplay and mechanics and general topics about the the game including but not limited to races, items and their use, magic, enchanting, skills, character builds, criticism, praise, funny random things that happen, places from an esthetic standpoint and and other general topics.

Use the Spoilers Section if you have to post quest details or other spoilers or a thread about the same. I will move this now.

There are 16 artifacts in the game. You can miss one

http://www.uesp.net/wiki/Skyrim:Oblivion_Walker#Achievements