Juez
DragonPuncher
Hmm, my Divine Weapons are barely doing damage.
EDIT: Should mention that on my Dex/Faith character I went ahead and killed Gwyndolin and got the Sunlight Blade and Brass Armor (cool armor set!). Mainly because I couldn't get and PvP action going as a Darkmoon Blade and mainly because when I did, all I would get is lots of laggy fights or some weird abuses.
Anywho, with the Artorias of the Abyss stuff cleared I'm now tackling Lost Izalith. Got past the Fire demon and knocked out the Ceaseless Discharge as well. Can't figure out how to kill the Demon Centipede, though.
If you're a faith/Dex build then you should be doing really good damage with faith weapons. What weapon are you using?
Also it takes way to long to get Souvenirs of Reprisals by PvP'ing it's better to do as Jet says and farm them from the harpies in the painted world. It takes a long time to farm the amount needed to go up a level though so keep humanities and the Gold serpent ring on hand. Not that it matters now that you've kill Gwyndolin though.
The centipede demon is a bitch and should be beaten as such. Also you should be able to summon Solaire to help you if you are having trouble. Good luck with the Bed of Chaos lolololol
Would you mind telling me your stats and Soul level?