This isn't as bad as I expected.
Graphics are okay. They don't do anything to show off the XBox 360 power, but they aren't bad either.
Sound is good. I like the radio chatter...especially your adversaries as you go in for a guns kill. You know what they say..."there's no kill like a guns kill"!
The level design is good, but sometimes the lenght of levels is inconsistent. Maybe the longer ones were seen as the "boss" levels, I'm not sure. The fjord levels were fun, but a little too much on the fantasy side.
The flight physics were pretty decent. That was where this game impressed me. It really was more like a flight sim in that resect.
This is a fun game that is definitely not too long (about 7-8 hours), and is worth a rental.