You can share your own compressed backup with trusted friends who also own the game, so they can verify files or restore corrupted installations.
The dream is a lie; Roman is deeply in debt to loan sharks. Niko is forced back into a life of crime, working for various syndicates while hunting down the man who betrayed his unit during the war.
Very rarely, Epic Games Store gives it away for free. Also, physical PC DVDs from thrift stores sometimes have unused keys.