Can I play the "1985 - Cold War Crisis" campaign as coop multiplayer missions?

Yes. Head on over to Flashpoint Conversion's download page and grab a copy. If you have problems accessing files from there, see if this MP co-op version of the 1985 campaign at OFP 4Players is what you're looking for. In case those links aren't working here's a copy I'm mirroring.

If you know of another download link for this file, please give me a call.