Get. This. Now.

Multiplayer co-op modes directly influence solo play, and vice-versa. The limits of solo and multiplayer games are finally left behind.
Psychological and mental trauma management.
25 weapons, different shooting modes, dynamic precision, drilling shots, iron sighting, extended zoom.
Complete hacking system with game play impact
9 devastatingly subtle PSI powers.
More than 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 - 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 fun without reloading.

Mr. Gestapo wrote:not impressed