With the terrible porting job and unbearable controls for the PC, I simply cannot recommend this game.
I downloaded a mouse mod so the game would be able to have mouse detection (it doesn't come with it). However the mod isn't overly great and the mouse is way to loose on any sensitivity. It just starts swerving around all over the place, even on the lowest sensitivity setting; it just feels like a slower version of the insane loose controls. You can use the wasd controls to aim as well which are a lot more fluid but you loose all precision of the keyboard and mouse combination and you can't move where your aiming in small intervals.
The port continues to be bad as the tooltips that pop up that correspond to your action (press 1 to jump out of the window, press 2 to pick up an item) aren't accurate and don't change if you change your controls with the mouse mod (you can't modify your controls originally). On the other hand with the 1.1 update the graphics are sharp and don't require a good machine to play. That being said the game has a very brown look to it which is okay but it seems like the entire game has the exact same atmosphere to it.
Ignoring these problems, I still don't think I would fully enjoy this game as others did. I wasn't a huge fan of the over the shoulder view indoors as Leo would take up litterly half the screen while turning and aiming. Also, I found that the aim system felt clunky and made the main character feel really weak. You can't move at all while aiming which other games (like grand theft auto which I love) is okay and makes sense but you use the same aiming keys as the movement keys which makes things a bit hectic. Leo also moves very awkwardly since he can't strafe. At first I didn't even know how to turn around a corner because I normally strafe and move forward at the same time to turn around a 180 degree corner. I like the rpg elements to the game but I had trouble finding out how to change weapons, apply ammo to weapons etc. The in-game manual is for the ps2 controller…
I've hardly given this game a chance and in reality should have given it more time but I couldn't get past these problems to go more than 2 hours into this game. Gamespot said that somehow with a terrible porting job the game still managed to survive. I personally disagree, this would have been a good game for the PC (most shooters are) but they messed it up so badly even with the 1.1 patch. I just cannot recommend this game for the PC. I'm not sure if it's just the port or the combination of the porting job and the game itself but this game flunked really badly.