I had started on normal. Well, AI is more cheating and is not smarter (I've heard that XNT has better AI, I've dissapointed): in any terror mission there are 4-10 enemies which will stay in the houses like in vanilla, imo this is a stupid. They are terrorizing towns and does not came to sit down to watch TV Also, AI is much more annoing then in vanilla on an insane/veteran. And XNT adds even more bugs then vanilla game. I call this game buggynauts, I can't remember the game with such a lot of bugs.
Anyway, thanks for the mod!