I can help once I get back to the Archives.
I can switch to the sunlight covenant if you need a sunlight medal.
Message me on PSN if you still need help. I will probably be on tomorrow but I have to get through Sen's Fortress and then Anor Londo before you could summon me in the Duke's Archives.
I'm in NG+2
Name: Brandon (actual, not my characters name)
Soul Level: 140
Location Area: Sen's Fortress
Location Specific: Gate entrance
Covenant: Darkwraith (can switch)
Online ID: AsclepiusPaean