Resurrection Man - by HeyYouWithTheFace
http://archiveofourown.org/works/4212999/chapters/9522216
Rickon has been pseudo-exiled in the mountains of Upstate New York for ten years, so long he barely remembers he's a Stark. Just him and his guardian, Osha, and the wolf his father gave him. Then word from the City brings yet more bad news: his brother is dead, his family is shattered and he's needed back where he belongs.
But does he belong there anymore? He doesn't think so, but a decade of bitterness and anger finally have names he can focus on. Lannister. Frey. Bolton. Baelish. Rickon doesn't care about justice or the labyrinthine feuds of the Families, his or any other. He wants his revenge.
One of his few allies is a mysterious girl with a half-burned face, another broken soul with her own reasons for waging a one-woman war against the powers of the City. Rickon's happy to use her to gain his vengeance, but as he sinks deeper into the City, in the mud and the blood he finds another reason to stay. One he was never expecting.