: Unlike the linear "corridor shooters" of its time, the game allows for stealth, sniping, or direct "run-and-gun" approaches.
: Tweaking weapon stats for the online competitive modes, though the community primarily focused on the single-player campaign.
The "v1.0u4" designation indicates the fourth official update (Update 4) released for the game. In the era of its release (2014), these incremental updates were critical for: