Cooperative games are always more attractive to me than others. If a game is just OK when playing by yourself, it’s probably quite fun with a cooperative friend. It has to be a plainly bad game in order for it to stink when playing cooperatively. That has been my experience.
I saw Sniper Elite V2 advertised on Steam and was intrigued. I saw that it had co-op, so I was even more intrigued. I tried out the demo, and I loved it. I was imagining the potential of playing with a buddy. I added it to my wish list and waited for it to go on sale. ;) The game did go on sale and a friend of mine bought it so we could play it. I played nearly the entire game with this person. I ended up finishing the very last section of the game on my own. (Read between the lines: the solo campaign and cooperative campaign are one and the same.)
There were times that the AI was not that brilliant, but I really enjoyed the game in spite of that and hope they make another. As another reviewer said, if you like sniping games, this is a good one. If you also like cooperative games, then you will be doing yourself a favor by playing this one.