Everything sounds so much more bleak when it's being narrated by a despondent Russian. This new Metro: Last Light footage could have been showing a day out at the circus, and the voiceover would still give it the sombre tone of a slowly dying civilisation.
Bad example, thinking about it. Circuses are usually pretty harrowing as is.
Instead we get a moody and atmospheric tour of Metro's decrepit cityscapes and squalid tunnels, all while our cheery friend gives a sermon from the book of Genesis, complete with an extra line that I'm pretty sure isn't church-approved.
It all looks suitably true to the melancholy of the first game. Metro 2033 was a brilliant way to have a bad time and, if you never tried it out, is still available from the Humble THQ Bundle (opens in new tab) for the next day and a bit. Metro: Last Light is due out in March 2013.
Update: Ooh! As Hitman Dead Man and GinjaNinja32 point out in the comments, THQ are also handing out free Steam keys for Metro 2033 for folks who like their Facebook page . At least, they will when the currently overloaded page comes back online.