I played this with the father of one of my sons friends on Saturday morning. We had some time after dropping our boys off at tennis and had a cup of tea, a chat and a couple of games in a mode called Gun Game. It's a mode where your gun automatically changes when you score a kill. You go through several different ranges before ending up with the final weapon, the ballistic knife.
I have never played a game with an adult before. It was good playing with another adult. We're going to organise a day playing games with the boys, who also like the games.