It didn't really have any crazy wow moments like the AC-130 mission from MW1, and the sniping missions, although great, didn't have the same impact this time around. The White House (both times) was brilliant, as was the oil rig (with the shoddy backgrounds!
), and many other moments along the way too.
Without doubt the hardest part of the game was the shanty town level after the Airport which is really early on in the game. This is a litte odd, but I didn't really struggle with anything after that point.
It's a great SP experience for sure and I'll go back through it to pick up the remaining Intel and complete Veteran.