The latest episode has reminded me of how much I love fics where the Winchesters are just huge BAMFs.
I'm looking for fics that show how actually dangerous Sam and Dean can be, especially against "normal" enemies (i.e. nothing world-ending (although they do kick ass there too)). Can be monster or human related (e.g. law enforcement etc). Outsider POV is always cool for these kind of things, but that's not a requirement.

Can be Sam and/or Dean centric (although I'm more of a Dean!girl *cough*).

Double bonus if you could point me towards "Dean being a dangerous bamf in Hell/ Purgatory" fics

I'd prefer no Wincest, but I'll read it if you think the story is just that good.

Thanks! :)

[Is there no "Hell" tag or did I overlook it?]