No, But there is a spec ops type thing which is like campaign but is muliplayer.
Chat with our AI personalities
Yes it is
On multiplayer, it is unlocked at the start.
no, there all legitimate people.
There is no campaign for multiplayer. There is multiplayer which has no storyline, there is special ops where you can do co-op to do either a kind of campaign with a storyline with a friend or do survival mode to survive as many times as possible, or there is campaign mode, which is a single-player storyline.
yes.