That only links to the first story in the series.
The Bloody 'verse
Bloody Soul - 26 chapters
PG-13 - Complete - Starts and goes AU at the end of Becoming 2. Rewrite of season 3.
The wrong vampire gets souled at the end of season 2.
Fallen Demon - 25 chapters
NC-17 - Complete - Sequel to Bloody Soul
Spuffy rewrite of season 4.
Heaven's Key - 25 chapters
NC-17 - Complete - Sequel to Fallen Demon.
Spuffy rewrite of season 5.
Secret Hell - 25 chapters
NC-17 - Complete - Sequel to Heaven's Key
Spike is brought back to the world and tries to find himself, and Buffy.
The site is gone but this link is on wayback.
http://web.archive.org/web/20100103081753/http://fanfic.kallysten.net/menu.html