Awsome first-person shootin fun.
Sound: The sound is very good. In the haunted mansion the sound was eire and really brought the game to life. The train mission you could hear the tracks clacking the entire time giving the actual experience of being on a train...with lots of people who want to kill you.
Controls: No troubles here. The controls were quick easy and responsive.
Replay value: Very good, you need to go back through story mode at different difficulties in order to unlock characters and other fun stuff. The challenge, arcade modes are bound to take up lots of time to complete, the map maker is fun to create and play your own map. Two player mode gives you plenty of different types of combat objectives to enjoy with a friend.
Overall: Great game to have, awsome wide sellection of weapons, and plenty to do.