Originally Posted by AffreuxLex
I know these questions are old but they are unanswered and someone stumbling across this thread might want to know.
Yes, I got this achievement myself with two profiles on one Xbox, the demon door which requires two heroes can also be done on the same console. However, all the co-op achievements (marriage, partnership, child) must be with another Xbox live gold player.
Yes, the controller must stay turned on. When it turns off the game is automatically paused and all you're earning is a higher electricity bill
Thank you for the help
I'd could try and answer questions but its been that long since I'd played it I wouldn't want to give wrong advice.