For the most part pretty good except for the Meg death scene which just came as really cheap and anti-climatic....I understand fans anger at the show for killing recurring/important characters in the show especially for shock value. Not that Meg hasn't had that coming for a while, but it just came off as really cheap. I am hoping she is brought back.
Anyhow, the rest was pretty good. Cas and Dean have always been at odds, but they always come together. The moment where Dean said "We're family" was a great scene since Cas is as close to Sam and Dean as anybody, and Misha has been one of my favorite characters on the show for a while.
The "Naomi" character is somewhat interesting considering now they have acknowledge a past relationship with Crowley, but I don't know where they are going with it.