Hmmm, I can't remember it being difficult when I played on oldschool, but then again I like to play on death worlds (max biters). Gun turrets can't protect you from the Behemoths unless you use AP ammo, and AP ammo is very expensive, so the thing to do is to get a lot of laser turrets (I guess you'...

I am playing on old school difficulty for this mission and I cant seem to stay alive. I have taken 3 different approaches: 1. Try to rush up the tech tree to plastics while spending as little as possible on defense. This failed miserably. 2 tech up my defenses and delay my plastics a bit. This worke...