I got it last night and the game is awesome. I went through the first 4 missions then went back and played the first mission a few times to try different weapon and entrenchment load outs. I can see already that getting a good squad should make for some epic gameplay. I will be on tonight around 8:30 Eastern. So far I like using heavy entrenchments with the engineering core loaded with rifles and sprint legs. I also played with the cannon and rifle set up. Also, I had a facepalm moment when I realized that I can put weapon entrenchments on the ground... at first I thought I could only put them on platforms.
I beat the 4th mission, don't go any further we can play together tonight!