Well, lag is my biggest enemy. I get an internet conenction through cable, but I dont get cable. So, my connection sucks, and anytime I get near 3 or more planes, I start lagging pretty bad, and its always RIGHT before I make the kill shot, so it screws me. But my biggest killer is the ground. Im so busy looking at the guy behind me, and cannot 'feel' the plane so he pulls up away, I think "phew" look in front of me and see why: "Who the **** would put a mountain THERE?!?" The most disturbing thing about that is that I am learning to fly in real life. Trees, here I come!