I'm still not used to the massive user interface, both top and bottom are too big and the camera can't zoom out that much. I often walk in to an ambush because I walk in to a group of enemies that just happen to be out of view.
When there's too much going on on the screen I often loose sight my my character because of it. =/
We will do better next time. We just need to practice more on ganking and setting up attacks. If you're familiar with Left 4 Dead the tactics are essentially the same. Boomer goes in pukes/smoker drags and distracts/charger takes out someone in confusion/hunter pounces sole player/spitter acids incapaciated player and all other variations on the Infected group attacks. It's just a matter of knowing who will initiate the attack with their abilities and everyone jumping in.
We do fine most of the time, but the tricky thing is that the AI sometimes decides to ensemble and destroy everything in its path, you can't do anything against them when we're just with the two of us since the bots on our our team just do whatever.
That's actually, as an experienced player, one of the reasons that I hate playing against the bots: they don't really behave realistically at all. I think it's much easier to play against real people.