Wasn't a big fan of it, there were some obvious 11th Doctor moments in it that I didn't really like :"I am the Doctor, and this is my spoon!", although there were some nice sassy moments that I am starting to like Capaldi for, but I didn't really rate the episode overall, although I guess that is because I have never really been a fan of stories in the past, but still. One thing that was curious was that they completely forgot about the Missy character that they have been trying to build up. Sure, there was the whole "Promised Land" thing, but I was expecting Nottingham to be teleported to heaven or something, but nothing happened. Ah well.
I am looking forward to the next episode. It gave me a "Dont Blink" vibe, and I am excited to see if this holds up as one of the best Doctor Who episodes, or if I am just grasping at straws to justify me still watching the show.