I liked the determination to free all the prisoners, I liked the weirdness of the Auchs (sp?) pair, I liked seeing Tim Shaw again, I liked the development of Graham and Ryan's relationship, I liked Graham's dilemma, I liked the captured miniaturised planets, I liked almost all of the Doctor's monlogues/dialogue. The action felt purposeful, and the story felt like it traded on what we'd seen of the characters over the series.
As usual the logic of the plot was incoherent, the villain caved far too easily, and Yaz had little or nothing to do. But there was enough entertaining stuff going on that I didn't really mind. I thought it showed the current setup geling nicely, even if much stronger writing would be welcome.