I just downloaded your game and I'm going to give it a try, I'm a member of a collector's forum for Cold War collectors, In that I have met a few former VolksPolizei and a former NVA Soldat. I have shared a link to the game with him and will see what he thinks of the game :).
I'm working on my own Cold War thing, A mod for the old PC game NFS HighStakes that gives the game a Cold War feel, featuring:
East Germany,Bulgaria,Czechoslovakia,U.S.S.R.,Poland,Romania,and Hungary.
When I saw your game I knew I had to try it, I'm thinking it'll be like the movie Lives Of Others but with the player playing as the Stasi.