I will say this is different from most of the other Xbox 360 fodder out there. I don't think I've played a helicopter sim on any Xbox previously so kudos for being different.
Overall the difficulty of this game ramps up really quickly even on the easiest mode. By the last 3 missions of the game you will be pulling your hair out in frustration as you replay mission again and again trying to finish the game. Very much like the Blazing Angels series, but in helicopters. After two solid nights of play, I gave up on this game. Maybe it was a bit too realistic to be fun.
Online Coop is dead so don't plan on getting a good crew of 4 together to try to get through the Spec Ops missions. I guess most people feel this game is a quick rental for some quick points and don't want to bother with the online and coop missions.