I saw some videos on this on youtube, and from what I saw I really liked. Though I think it mostly depends on whether you have a talkative team or not.
To expand on what the game is about:
There are three sides, two of these sides will be set goals like acquire a, b, or c. The opposite team will likewise have related goals. These goals are mutually inclusive, if both sides cooperate fully, both will be rewarded. But the goals are not just limited to simple trading, one of the goals might be to acquire something that either the opposing trading team has or the third team has, and acquiring it will a massively bigger reward for the next round.
To top this all off, no one knows which team has what other than the team they're a part of.
It's like the prisoner's dilemma. If the first two teams work together they will both be rewarded. But betraying one will almost guarantee that your team will win, likewise, you know that the opposing team knows this as well. Both teams attempting to kill each other doesn't really result in probably success for either one though.
To top it all of is the mysterious third team, aka the kill team. They have no goals, or rather their goals are everything. It is their job to get what the first and second team have in their possession. Their reward will be based entirely on how much stuff they can accumulate. So while the first and second team usually tries to do a trade-off, the third team will be seeking the place where they're trying to do it and ambush the meeting.
It's kinda like werewolf, except FPS gangster style. With voice chat built in, and the sound of voices being heard relative to the distance the two characters are, it brings a whole new layer of fun into the mix. But again, it depends on who is playing with you.
Some notable videos I've come across:
http://www.youtube.com/watch?v=fjyEeekaqQc
http://www.youtube.com/watch?feature=player_detailpage&v=ApkzZJ3edMM#t=96s Some dudes run into a road blockade of cars, chaos ensues.
