I did take the time to help a friend get 3 stars on the veteran missions. So now he only has 2 more stars to get and those 2 are for the training courses. Those timed ones are rough so good luck to him on those.
Overall the game was fun but easier than the previous Call of Duty Modern Warfare games. Some parts might get you but you don't get stuck for long. If you want to earn some achievements fairly quickly, you can earn them pretty fast in this game. It didn't take me long to finish the campaign and go back to get the achievements I needed from the campaign as well.
Survival mode is fun and can be rough. I'm glad you only need to get to level 15 on all the boards for the achievement. It would be rough to get up to 30 if they wanted you to go that high.
So now that this is finished, I'm ready for the new console to come out.