Don't let the glitches fool you.
This game is totally action packed, and if you want you can end it in no time. Basically because it's difficulty isn't at all high, and also the fact that you can go straight to the missions without needing to drive all the way to their place makes it easier too. You can just bring the map screen and choose whatever mission that you want to play. But I'm not really into that, because it's always fun to search the place around for upgrades which boost your health and adrenaline capacity, ability with weapons, etc.
The combat system is great. Of course it has been done before, but it has an interesting mix of combat styles. For instance, you can apply shoot dodge - MAX PAYNE STYLE -, and whenever you mess up you can always rewind time, Prince Of Persia style. And it has a very nice GTA feeling all over it.
The playability overall is also quite good, the character is very nice and smooth to control. The vehicle controls might give you a tough time in the beginning, but you'll get used to it. The only "no no" in my opinion is the fact that you don't have control over the camera when you're driving.
The story, well, it sounds interesting. Probably I'm one of the few who think that, but the beginning of the game actually surprised me a lot, and gave me a few good laughs. I won't spoil it here, because I know I wouldn't have felt the same if someone told me how it was. I'm still not through the game, so I don't know how's the plot going to roll, but I'm enjoying it.
The graphics are great. The game looks really good. But you have to see through many (some of them significant) glitches that occur through the game. Yesterday I played it for a couple of hours and ran through 3 or 4 graphycal glitches. One of them, for instance, I killed a civilian, his body disappeared and his hat remained on the scenario.... suspended on air. Yeah, it really happened. Another one: I fell off of a roof when I was driving a car, and I got stuck behind a trash bin, without any possibility to move. So I exited the vehicle, naturally. I walked a few steps, then I looked back and... surprise, the car wasn't there. Wow. But anyway as I said before, don't let these glitches fool you, because this game is very entertaining and garantees you a very satisfying gameplay.
The sound is the weakest point, in my opinion. The walking on cement or concrete feels totally unreal, like he's walking on planks of wood or something. And the car engine doesn't always look synchronized with your car movements, but oh well, nothing critical here.
I chose the "Surprisingly Good" classification because I really wasn't expecting to like it so much, after all the fuss on the reviews about the game. I'm not sure if it is long enough to buy, because I'm only playing it for 2 days, about 5 hours total time, but I'd definitely give it a shot if I were you.