I gave it 'Below Average'. I rented this a few days ago and thought the story and the cinematics were very good, i really got in to the story. Where this game falls over for me is in the glitches.
The first i noticed was the aiming, i would sometimes have to use a whole clip to kill 1 enemy as most of the bullets passed through without causing damage.
Another glitch I came across quite often was teammates not following. Some levels ask you to 'get to the van with all teamates'. It can be a pain getting to the van after gunning down 20 guys only to find that one of your team has not moved from the starting area. Walking back to get him doesn't seem to help either as he won't move. Only way to sort this was to restart the level. I've sometimes gone back to get teammates only to find them fused in to a wall or concrete pillar.
There was also a glitch I noticed with the controls. I always play with y-axis inverted and the aiming speeded up. I counted at least 5 occasions where I would be in the middle of a gunfight and the controls would revert back to default!!
So overall I would say rent this game before you decide to buy, if you can get past the glitches and poor AI then this could actually be quite enjoyable. Also it is quite short, I did about 70% of it on the second day I had it so renting might be ther better option here.