Rainbow Six Vegas 2 = win.
The only thing I've noticed is.. For online co-op, I want it to be more like the first one. Just you and whoever you bring, be it one buddy or all three. I don't need the extra baggage and responsibility of 2 operatives that are ultimately AI. Sure, the pro's are, you can more tactfully clear rooms and go through levels, and they can be a distraction when you want to enter a room through an obvious and dangerous way.
So far, I believe we're on Act 4 part 4 somewhere around there. I've played as Bishop this whole time and will finish as such, with my buddy as Knight. Then once that's done, we'll go back and beat it again this time swapping positions. To get the other achievement, and to experience commanding Bob and Steve over here.