Now that FPS games are well free of the contemptible familiarity of the military FPS it's easier to look at this game with a clearer perspective and find that even though shooting up pop up gallery duck bad guys isn't all that interesting, the scenarios and arenas and indecipherable chaos of combat are very interesting. A Game best defined by, in the middle of a sneaking mission, making you walk through a church full of rocket launchers before having a chopper patrol fly by, practically begging you to shoot down the chopper- and if you hide in the church after alerting it, the choppers rockets will even damage the building; it's a game that constantly points you at different ways to play out it's scenarios, to go "off script" and still find ways to succeed, and to see the game respond appropriately (usually).