My apologies if this has already been answered, but is there a way to "sync" your settings between 2 PC's? I regularly play on my laptop in the evenings while I travel for work, but when I get back home I play on my desktop. As of yet, I haven't found a way to sync up all the changes I've made and campaigns I've completed between the 2 PC's. Anyone know of a way to do this?

You can't do it automatically, but you can transfer the profile file to your other PC.

Is it okay to use a profile made on another PC? Are the achievement counters stored in that file or can you get the achievements separately?

My profile was erased several times during the beta testing and I don't really feel like playing all the missions again.

Is it okay to use a profile made on another PC? Are the achievement counters stored in that file or can you get the achievements separately?

My profile was erased several times during the beta testing and I don't really feel like playing all the missions again.
Steam achievements are stored on the Steam servers.
My profile got erased 3 times during the beta, but the achievements stayed.

I think the achievements are actually bound to your Steam account.
I haven't created a second profile though, to verify this, but I don't think that Steam knows about multiple profiles.

Achievements are bound to your Steam profile, that is correct.

So if someone uploads a profile with all missions done, can I just edit the teams and use it like normal?

Yes. You just need to rename the profile then and recreate your teams, then you are done.

So if someone uploads a profile with all missions done, can I just edit the teams and use it like normal?
Yes. You just need to rename the profile then and recreate your teams, then you are done.
Just like in WA. Yay!