This advanced engine supplies detailed interiors as well as expansive and well-rendered landscapes. Overall, the graphics are quite good, but not without fault. More enhanced texturing, particles, ambient lighting, and other effects could go a long way in making the environments seem more realistic and immersive. Level design is good, providing a wide variety of settings, however there are many repetitious actions required as you progress through them. Character movement is fluid and realistic, with the possible exception of adversaries who employ the infamous Unreal strafing roll to dodge your bullets.
Dialogue is lip-synced nearly flawlessly and characters even blink convincingly.
Opponents respond to your attacks with a real world based damage system. A single headshot will normally be fatal as long as you aim well. It will take several torso shots to down an enemy while aiming for appendages will result in mere flesh wounds and only serves to ruffle enemies' feathers. The audio not only provides a wonderfully groovy soundtrack, but realistic sound effects as well. For example, the distinctive buzz of AK-47 rounds flying past your head are unnervingly convincing.