4A Games has released the third and final movie in which illustrates the post-apocalyptic setting of Metro: Last Light and explained how we survive in various locations. Specifically, it shows the form that we use in some areas from polluted air and highly toxic and how to use the light .

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By examining the unique equipment and brutal, handmade weapons of which every Ranger needs to survive the dangers of the Metro, this chapter also teaches to use light as an ally (or as a potential weapon) detailing the infamous stun based economy, trade in guns and the mechanics of customization.

You can find the following video, with subtitles in Italian.