Kane and Lynch is one of those games that you so look forward to only to be utterly disappointed once you actually get to play it. Such potential wasted. The co-op campaign is a joke - don't buy this if you want to play on a LAN because you can't - it's a split screen affair and one player MUST play with the official Xbox controller for PC. Who puts a split screen co-op on a PC game?!
The game is also buggy as Hell. If you end up being one of the unlucky people whose frame rate drops every other second, making the game virtually unplayable, you'll have to go into your device manager and disable all your HIDs. This fix worked for me but it doesn't work for everyone so be warned, you may end up not being able to play the game at all. And there's not even a patch for it.
Even after that, my sound is always screwing up. It goes loud, it goes quiet, it goes choppy, it goes staticcy, it goes completely then returns without warning. Awful. Haven't found a fix for this yet.
I haven't played the game all the way through but a look at the forums suggests that you'll be lucky if the game doesn't crash on you. A lot. It hasn't happened to me yet but that doesn't mean it won't.
The game itself is actually pretty good though. It's no Gears of War but it's good enough to be worth playing if you can get past all the bugs. The script is good, the voice acting is decent and the story is straigh out of Hollywood. It often really does feel like you're playing in a movie, which is what the makers were after. Enemy AI sucks - the cops just stand there firing blindly at you while you shoot them in the head, they don't appear to make any real attempt to take decent cover or get away from you. It makes for a pretty easy ride, which is a bad thing (who buys a game for the LACK of challenge it presents?) but it does make for some good sequences where you, as Kane (or Lynch if you bother with co-op) take cover behind a wall or whatever then peek out to off three or four guys with headshots in quick succession (something virtually impossible in the console versions by the way because the joypad as a precision aiming device is, well, rubbish).
Having said that, sometimes you can shoot a guy several times in the head and he just keeps coming. The effect of your bullets sometimes feels pretty arbitrary and can take away from the feeling of achievement when it does come off.
I don't find the cover systemt particularly bad, though i do know lots of people do. If you handle it right, it works a treat. I have read though that some people find it hard to use, specifically getting stuck behind scenerly when they don't want to take cover - because cover is context sensitive, it's automatic, if you're near cover you take cover, there's no button to press.
One control issue I had was with the inventory - I had to change the key because the default if mouse button 3 and I don't have a mouse button 3! I shifted it to 'I' though and it's fine.
A pretty average game overall and well worth playing through but I can't give it more than two stars because the execution of the PC verion is lazy and shoddy and full of bugs and programming deficiencies. For £7.99 though, you could do a lot worse!