Morrigan Stark
Arrogant Smirk
Depends on your build. Here's what I'd suggest:Is there a preferred order to tackle things after getting the Lordvessle?
- if sorcery/int build, go to Duke's Archives straight away;
- if pyromancy build, go to Demon Ruins;
- if faith build, go to the Tomb of the Giants.
- if pure melee, go to New Londo Ruins if you haven't already, to pick up the Very Large Ember. That said if the boss is too hard you can go do the other areas first after you do that and come back later.
After you are done with all of those, go to the DLC area.
Also, if you don't care about the spells etc. much, I'd suggest finishing Demon Ruins/Lost Izalith first. Simply because it's the worst part of the game so it's good to get it out of the way.
It is also often preferable to do Lost Izalith before Tomb of the Giants, since you find a useful item there that is really helpful for the Tomb of the Giants, but it's not strictly necessary.
The rest of the order doesn't matter much beyond whichever you do first, IMO.