some guy you have to escort
No, But there is a spec ops type thing which is like campaign but is muliplayer.
You can't.
yes.
No, MW2 does not have 2 player campaign. Although, it has 2 player Special Ops. Black Ops also has two player online.
no, it would not be as good.
if you collect all of them it gives you cheats in the main campaign
Nope, so far only World at War has co-op campaign.
Both.
yes complete the campaign.
Not on campaign you idiot! Only on mulitie player
About 6-7 hours on normal.
i think modern warfare 2 had better graphics by quite a lot and mw2 campaign is better then black ops one but i do like black ops zombies i think treyarch has fail to beat mw2 campaign and graphics but multiplayer is just about the same but black ops has got worse killstreaks then mw2