For anyone's wondering how to change weapons and items while playing on keyboard, press Q. This demo is pretty good, only complaints are movement is kinda slow, not much stamina for running, enemy's AI is dumb (just like with old psx games), you'll have to figure how to kill each specific enemy by your own, not much to say about game's environment and map since it's just a demo, I don't know anything about the tv show which is the inspiration of this game but mayhaps those who like old ww2 games and movies would like to try this out.