Post Apoclyptic MP4O

This came about while I watched a trailer for an upcoming game called Metro 2033, which is mainly about a man called Artyom who, along with thousands of others, are forced to life in the underground tunnels of the Moscow Metro. due to some (currently) unexplained apocalyptic disaster (which I think is more than not a nuclear disaster, since there is alot of snow, ice and furry mutant creatures).
I got the idea when, at the beginning of the trailer, Artyom is being looked over by two guys in black gear and gas masks. One of them says to the other: "Should we contact the Gestapo(or something like that)?" to which the other replies: "It will take them forever to get from the reich." So I'm assuming that one of the factions in the metro could be Neo-nazis. But who knows. We'll have to find out when the games is released.