We're in business then.
Blood and Fire by Addie Loganhttp://spikeluver.com/SpuffyRealm/viewstory.php?sid=14047&warning=NC-17Summary: A young woman goes looking for revenge and finds more than she bargained for... (Set in an alternate Season 2) Season 2, Claim
Freedom by iceminkhttp://spikeluver.com/SpuffyRealm/viewstory.php?sid=11961Summary: Set in the world of the The Wish. Instead of snapping Buffy's neck, the Master keeps her imprisoned so that another Slayer can't be called, and so that he will be free to carry out his plans. In the mean time he's called the last of the Aurelius line, Drusilla and Spike, to help him run his new kingdom in Sunnydale. Author's Notes: Warnings: Character death. Bloodplay. This is a fairly dark story, and Spike will be acting on more of his vampire impulses than he does in most Spuffy stories. Blood that Binds by Behind Blue Eyeshttp://spikeluver.com/SpuffyRealm/viewstory.php?sid=36016Summary: Set in Season Two, what if on Halloween Buffy dresses as a vampire instead of a coiffed debutante? What if she was found by Spike then? How will a mated slayer change their world?
Can I Keep You by CandyNickshttp://dark-solace.org/elysian/viewstory.php?sid=1756&warning=NC-17
Summary: Vampire Spike meets runaway Buffy on the streets of Victorian England. He takes her home fully intending to kill her after he's had his way with her, but falls in love with her instead. Buffy needs a place to hide, but will she stay once she finds out who Spike really is?.....on the Highway of... by Margot
or Spike and Buffy Reduxhttp://pages.prodigy.net/leighschneider/otho1.htmB/S, B/X, B/A
NC-17
Summary: Buffy and Spike need each other to heal their wounds, but Angel is never far away. Set he summer after Becoming. This is part of a larger primarily B/A series but this part is mostly spuffy with some Xander thrown in at the end of it. So if you can't handle any of that skip it, but I love this story myself, especially the first half.
Hope some of these are helpful. If I can think of any where Spike is really really badass I will post them but these, right now, are the ones that come to mind.