I thought it was the standard edition, but I saw a bunch of threads of people talking they didn't get the rewards or expansions so I don't know. From those it sounded like we got the gold version. I am fairly sure that they are only reachable once at the end game. I've got a lot of hours in the game, but it has been a while since I leveled up and I forget exactly when it opens those up. I know the underground you have to do the "Secure Quarantine Building" mission before you can enter the underground. If I remember right, that only is offered after finishing General Assembly.