Yeah, that's right. If you miss an artifact on a daedric quest though, there's one that you can get 2 from. And you only need 13 items out of 14 quests.
Correct- and from my understanding you do not hae to keep the items, just earn them.
I did the Ring/Vest combo on the Hircine(sp?) quest because I was tired of doing them but wanted to knock out that trophy.
I think the worst trophy of the bunch has to be the last TG trophy. for those who haven't started doing it- you have to do a main TG quest in each of the 4 major holds, but in order to trigger it, you have to do 5 smaller missions in that area. The quests are random, so you have to keep accepting them and denying them over and over until you get ones for the places you haven't been to yet. Takes forever.
It was made even worse for me since I wasn't triggering any of the events in Windhelm. Turns out that after the Civil War, I ran off when the mission showed complete and didn't finish talking to the general, so he was still standing in there waiting around. I went back and all the troops were still gathered around waiting to find out what had happened. I talked to him, he went outside and informed the men and everyone departed. Windhelm started showing up in the random quests after that.