This game is absolutely fantastic. It launches feature complete, working and well polished. Even 4 days before the official launch. Many people have complaints and what I mainly see grief about is widescreen support, tutorial crashes and teaming up.

For the widescreen support...developers have said (and written on the Steam store page) that widescreen support will come soon. It's not here yet, but will be very soon.

My friend crashed during the opening cutscene and couldn't play the game. He modified his settings and set it to "Performance" instead of "Quality" and he had no further issues with the game. We played for 8 hours straight.

About teaming up, if you can't join your friends lobby, make sure crossplay is enabled and team up using your friends invite code. That worked for us. Something else that also worked is changing the gamemode to Operations, having your friend join and then change it back to campaign.

With all that said, the game works, plays great and entertains you. They've got a solid foundation and if this is what we have to build upon, we will have a very strong live service game for years to come!