Not many games of recent have made me growl in frustration. Sure, some have angered me and many a “ffs” have been uttered when missing another backstab only to be plunged into non existence for the millionth time; but Mirrors Edge has on more than one occasion summoned a genuine roar from inside me – echoing around the house like as if from a lion who has just been kicked in the nuts. The roar is always followed by a slamming of the keyboard so I can try whatever section I’m on again, again, though the fact that I did…