The world of Metro: Last Light is grim and dark, as these things tend to be, but it's not yet clear whether it crosses the line into grimdark. Calculating such things is difficult, and requires prolonged exposure and comparative flowcharts containing pictures of fetishised death factions and tattered children playing with burnt toys in the rubble of their homes. The children are ghosts but even so a mutant dog, formerly their pet, will eat them soon. Through all the horrors of this most recent video, which provides an overview of the Metro system, factions and threats, a disconcertingly cheerful man explains the situation and provides survival tips, such as "try not to lose your head".
I'm baffled that "try not to lose your head" wasn't instantly followed by an on-screen decapitation, to the point where I think there must have been an accident during editing.
Metro: Last Light is out much sooner than I thought, although it's mid-May release is still over a month away. Somehow, I had it pegged for the last days of summer.