Metro: Last Light is just a few months away now and we’re eagerly awaiting to get our hands on the game. If you’ve visited OnlySP before, you know that we are ardent fans of the original game, Metro 2033. This latest trailer won’t make your day any better emotionally, so be warned. It seems that the game is taking a much, much darker route than its predecessor, and judging from the trailer, will certainly explore the humanity of the inhabitants of the Metro in the final product, which should be quite interesting. Take a look at the Salvation trailer below and leave us your thoughts.