Fun but sometimes extremely frustrating.
Now, the reason why I give it such a bad done is because the character is not easy to control and the precision of the game is deciding. I played the 2nd mission - the one where you are followed by hummers etc about 30 times and each time I died because the aiming wasn't precise. I was aiming at the enemy who is something like 1 meter from mine and it will hit the car I'm suposed to protect that is like 3 meters away that i'm NOT aiming at all. I shut 8 times in the head the enemy but is not dying, etc etc etc. I played the CoD series and finished them all, I played many other games, but this is something I have never seen. Difficulty is not a scary thing for me - i.e. I finished Dark Souls.
So, the game is good, the idea is great and I hope that they will increase it's annoying and unplayable unprecision so as to be able to play it.
That's what I think after playing for several ours.