Finished the campaign on Hardened, PC version.
Guess what ? it was fuckin great! granted not as good as the MW ones, but still.
Story is the usual excuse to let you do cool set piece shit, but it works for its purpose, even if the "twist" was too obvious. Its the same tough B-movie (disguised as a AAA budget film) that its just enough for these games.
I really enjoyed it, you COD campaign haters are really missing out in some of the most over the top silly fun to have on an Single Player FPS. I might jumping on the Multiplayer fun, but im having my doubts since performance on my rig wasnt top-notch. We'll see.
edit: you know what i really didnt like about the campaign though ? the times it takes you out of the first person view to do some cinematic crap. Way to fuck up the immersion :/