I have yet to even finish singleplayer. I only found the cinematic trailer interesting and the intro. Then after that the game took a deep plunge into a never ending parade of stuff flinging "guerilla warfare". forget. You'd think a communist nation would be much more better at wiping out rebellions.
It's incredibly awful and I uninstalled it maybe 3/4 of the way through the campaign. Now it sits in the "stuff" category of my games list.
Multiplayer was okay. It needed a LOT of work though, I could run the game in singleplayer at 60 FPS but going into multiplayer I started lagging a lot and I couldn't figure out why at all, it made no sense. The whole point system they did with perks and killstreaks was really nice though, I give them credit for that.
tl;dr: stuff campaign, okay-ish multiplayer.