FEATURES
 * The multiplayer, teamplay, co-op modes directly influence solo play, and vice-versa. The limits of solo and multiplayer games are finally left behind.
 * Psychological and mental traumas management.
 * 25 weapons, different shooting modes, dynamic precision, drilling shots, iron sighting, extended zoom.
 * Complete hacking system with game play impact. 5 devastatingly subtle PSI powers.
 * About 20 NPC with non-scripted, fully reactive and efficient AI, endowed with a sense of initiative. Bloody close combat with technical detail. Incredible physical movement realism thanks to Source Engine physics.
 * Excellent replayability due to primary and secondary missions, dynamic environments, non-linear level progression, and random NPC spawn, type and appearance. Death doesn't penalize players: no need to restart the current mission.
 * Open-level gameplay for hours of play without reloading.