From Strategyinformer.com: "Metro 2033 was a refreshing blast of fetid tunnel air when it came out back in 2010, a well-paced survival shooter with a beautifully realised post-apocalyptic setting. It wasn't all sunshine and roses, though. Combat could be a bit wonky, with awkward stealth sections and a lack of satisfying feedback from your weaponry among the few unwelcome blemishes that stood out. Which might be why developer 4A has decided to go back and remaster the entire game with Metro 2033 Redux, reworking both gameplay and visuals in an attempt to provide the ultimate Metro experience.
The benefits of the upgrade to sequel Metro: Last Light's engine are immediately apparent. Graphics have been upgraded to 2014 standard, with all the bells and whistles you'd expect from a modern title. Metro 2033's world really benefits from the enhanced lighting and environmental effects, which make its grim, ramshackle world feel even more alive.".