Graphically, Gunman Chronicles is a step in the wrong direction. The game lacks character model variety as well. You'll only encounter three or four unique models on each planet, making the task of literally running from one end of the planet to another feel that much more generic. Adding to this problem is the fact that every one of the Gunmen looks and sounds exactly the same, giving an odd cloned feel to your entire outfit when you're around other Gunmen. Audio is good in some parts and bad in others.
Voices are hollow with lots of echo, even in wide-open areas with no apparent reflective surfaces.
There's way too much reverb with EAX enabled, so I suggest you turn it off if you're used to playing your games with it on. To make matters worse, sounds pop in at full volume instead of fading in slowly as you get closer to objects, so it's either all or nothing. I have to say that Gunman Chronicles does make good use of 3D positional surround sound, and you can really tell where things are coming from sound alone, but the mediocre sound effects will leave you wishing something sweeter was emanating from your speakers. What Gunman Chronicles does have is some of the best ongoing story and plot in any first person shooter to date. Following in the Half-Life tradition, Gunman Chronicles features a lot of scripted events, and uses them to their fullest effect.