Well, there are a lots of games where plot somehow connected with Russia/USSR.... And there are many writings and namings in russian there.
Well, if you have questions about translation, just post screenshots, ill do my best! (i think it might be fun for me)
For an example, "Shagohod" in MGS3 can be translated like "StepWalker" )
And RPG-7 stands for Ruchnoy Protivotankoviy Granatomyot - Light Antitank Grenadelauncher, modification 7, used in SU army since 1960.
I bet you didnt know that )