I just bought Crisis 2 a few days ago while overseas in Europe and I was wondering what the enemies' "Field of Vision" range is when I start to play the game in about a month back in Australia. Is it easy to sneak within them while planning an assault or just getting through a location or is it fairly difficult?

Does installing all of the patches up to 1.04 fix any of the AI/Multiplayer glitches in the game, or are there still problems to be addressed?

Thanks in advance.