The villain started off different, but then they tried to cram too much into a single episode again. All of a sudden there was lots of name dropping of past villains and then it was all inexplicably over. If the two immortal beings really were all powerful, they sure didn't do a very good job at it. It all ended rather disappointingly. Least convincing immortal beings ever.
Maye it was supposed to focus on the companions? I now know all their greatest fears. All pretty predictable and not very scary. If your greatest fear is running away from home, only to end up running away from home with the Doctor? That's pretty odd.
