Anyone who has the game and hasn't checked it out recently, I'd recommend you take a look. The devs just added a day/night option, so (I think) all the maps can be played at night time. You can hardly see anything unless it is near a light source, or you are using a flashlight/NVG's. They also added in a new level, but I haven't played it yet.
the new map is really cool and playing at night is also more tatical now. the game is starting to be my favourite fps if they keep updating and adding new maps.