Its highly realistic, action packed and an epic experience.
The slow movements and hide/peek add to the games realism.
Its a hard game, its meant to be, there is no fancy guns, no lovable characters. The atmosphere is of war. Its violent and unforgiving.
Like call of duty 1, kz2 sets the new bench mark for how all fps should look and play.
However this is an adult game! I cant stress that enough.