I tried so hard to like this game, but I just couldn't. I was loving the concept, loving the graphics, loving almost everything but the fundamentals of a good game. The issues that this game has are severe, and can't be gotten over.
Let start off with platforming. It's terrible, with my main complaint being that you have to wait a solid .25 seconds to actually jump for some 'realism.' It sounds like a small complaint, but it's not. You quickly go nuts from this.
For combat, it's also bad. In the 50 odd minutes I played, I beat around 3 missions. I was able to upgrade the starting pistol, but no other gun. I heard it comes later on, but I don't want to wait 10 missions to get another weapon.
For open world mechanics, infuriating. Each mission is open-world-esque, but not really. Let's say you just killed 12 guys, you go towards your goal, only to realize you went the wrong way. No problem, I'll just turn around and go back -- wait, I just killed these guys! Yup. As soon as a respawn area goes off screen, they respawn. This makes moving around in open areas the biggest BS ever.
There is COOP, but it won't fix the clunky controls, bad design, and poor planning of the game. So I can't recommend. (Not even for the $6 I paid for it.)