Unfortunately this amazing game had no hype whatsoever. The storyline is GREAT, characters are OK, combat is thrilling but there are a few bad things about it. Firstly being stealthy in this game is like wearing a flashing pink strobe in a city center, people WILL notice you. Miss with one silent pistol shot and everyone knows where you are, even if they do drop for some reason the only effect the silencer seems to have is sound. It has a REALLY small replay value as depending on your choices you get a different ending etc. Anyway enough with the bad, Time for the good stuff.
If metro 2033 focuses on anything fully it would be atmosphere. The fact that they made the radioactive atmosphere a game play factor was amazing, but its not passive like Fallout 3. When you get to the surface or radiated tunnels you need to use your Gas Mask. While it is annoying that if the game swarms more than 12 howlers at you they rip through your mask (which only happens once or twice) it is good to see that they added it.
In the end it is a great adaption of a book by a Russian author, so I give it a 4.