Well, that's more like it.
The setting was great. I really like it when the show does concepts like that (e.g. the ship race in space or the Titanic in space) because it's pretty much the only show which can get away with it. Too bad they didn't have the time to delve into it more.
Capaldi and Coleman were fantastic, as usual. It's good to see that last week's episode had consequences but wasn't how it ended. I liked the melancholy touch to the adventure at the beginning.
The Doctor was really cold and heartless in this at times so much so that I was kind of upset about it. He seems to be quite dependent on Clara for empathy. The scene with her, the Doctor and the woman who was supposed to be the next victim was great. When Clara told her that she was sorry it harkened back to Ten who used to say that often. I wondered what it would have been like for the Doctor seeing that. He used to be that guy, has he forgotten it? But then he did that 180 and drew the Mummy's attention to himself. Loved the once again inappropriate use of the "Are you my Mummy?" line.

(On a sidenote, it's interesting that the Doctor apparently remembers this but not kissing Madame de Pompadour.

) He is a good man, after all.
I dislike the new tendency of important things happening off-screen. I would have liked to see how the Doctor got Clara to agree to one last adventure or how Clara came to that decision (I'm unclear how that worked, had trouble understanding all the dialogue). And of course, that we didn't get to see the rescue of the passengers. Then again, it's quite possible that the Doctor lied and he only managed to rescue the three of them.
The Mummy was yet another metaphor for the Doctor, I think, just like the half-face man in the first episode. The Mummy is an ancient soldier (kind of like the Doctor who is also very old - as pointed out by the memories of planets long gone he shares with Clara at the beginning - and who has been a warrior and likened to an officer last week). And it can't stop doing what it does like the Doctor (as pointed out by the dialogue between him and Clara in the Tardis at the end). It wasn't as poignant as in the first episode. I wonder whether this will lead somewhere.
I also liked the jazz rendition of "Don't Stop Me Now".