The AI is awful, kept getting stuck on walls and other characters. Game had so much potential, it felt like a rush job. Never finished the first level, i hate dit that much. Give it to a decent game company and let them fix it, Rockstar or Valve com to mind.
The AI assistance on this game is terrible. The AI opponent is unstoppable. It doesn't take many hits for you to be killed, but takes many rounds to kill aliens. Seeing the classic weapons is a cool feature. But the game play is terrible. Don't waste your time, money or rental on this hot garbage. Not worth it. And I couldn't find a way to play co-op missions either. That's probably the only way you can complete most of the missions. Because the computer is no help in large combat