How about
Tales of Maj'Eyal: Age of Ascendancy
Personally I enjoyed unlocking achievements, even if I tend to not in any game I play in, each playthrough I was attempting to unlock something and have new type of characters to play with and is for group that didn't tried rogues such as myself.
Runescape Since was mentioned a few mmos I might as well trow one that I sunken in my time
I think it is more distinctive from others, quests definitely not are typical kill x monsters or get x items from monsters but sandbox style and quests reveals part of lore or maybe a twist. As for option you might as well evade combat at all just like UO. There are alot of options even if there is no class or races in game just being a simple baker who will burn the bread in the process or a few apple pies to a fearless hero who will slay abominations and save kindoms using not only his sword.
Deskop Dungeons quick play, puzzle RPG, something different when I tried out and at first it started easy but unlocking achievements was a challenge,some times I had a feeling I failed due to unfair luck or just to not being smart I guess but at the end was a pleasant feeling to be able to beat one .