Roughly the size of act III. Bigger/longer if you explore the events and myriad side dungeons thoroughly. Can't give u a time estimate though, that depends on difficulty
took me 5 hours to go through torment 1 on my barb. granted he was not great geared. so had to go down in diffulcility
Actually after 5 hours and 45 min before i finally reached malthael and it took me about 14min to kill him on expert (including setting up skills beforehand)
Actually after 5 hours and 45 min before i finally reached malthael and it took me about 14min to kill him on expert (including setting up skills beforehand)