arrow keys if glitch happens then click space and you reset to last checkpoint (level 1 and 5 currently) press k to switch to another communist (Stalin, Mao Zedong, and Sergei Kirov) Yes, the game is winnable, I have beaten it, though the last 2 levels are very, very hard.
Admins, this is educational and it shows the importance of the rivalry between capitalism and communism and the historical figures in the cold war and earlier eras of this rivalry.