So I finished the campaign and dived straight into Versus followed by Scavange.
And OMG, Versus makes me rage so hard. I don't usually rage at games, so I consider this a good thing. Scavenge is also really good game mode too, I can see it more suited to competitive play as its a more tight game mechanic, communication is even more important than Versus and the matches are quicker.
Anyway, this is just a heads up to Scavenge mode, try it out if you haven't already.