Workaround for screen going black after first mission -> I’m at the third mission right now and I can attest to the bugginess of the game. I too had the ‘black screen of death’ and the way I’ve been able to work around it is by saving often using multiple save files and not using the reload button (for some reason, it almost always ‘black screens’ on me if I do that.
After every scenario, I exited out to the main screen when it got to the map .. this saved my progress and allowed me to continue on (with the possibility of having to reload).