I enjoyed it, but not for the right reasons.
The ending was ridiculous, but typical doctor who sentimentality so to be expected. We all know by now that Moffat doesn't write stories, but puzzles, and the ending seems strange because the puzzle came first and then a way of desperately trying to justify all the complicated mess was found as an afterthought, but that's alright, to be expected from Moffat at this stage.
I enjoy apathetic doctor, if only because it was a change from narcissistic mad professor/God. The staircase into the clouds was lovely, so was the new Tardis interior. The sontaran and lizard woman/assistant felt a bit shoved into the story and out of place, and they said some pretty corny stuff ('bargains with the universe'?) but whatever, it was well done.
God, the sexual tension between Clara/doctor annoyed me, why? Why must there always be a love interest and flirting for god's sake?
Clara herself is very annoying. I mean at least she's not a carbon copy of Amy, but she's still one dimensional. I can't stand the whole act of "I'm really clever and not afraid of following the strange man and I just stand there when confronted by an aggressive alien worm and threats of memory wipes, I'm just going to stand there and perpetually make witty quips and flirt with people all the time", for god's sake can we have someone normal? A normal person with more than a couple personality traits so that I may identify with them. Because isn't that the whole point of a companion? To have someone you can relate to and imagine being in their shoes, ripped out of your normal life, going off with a brilliant, fascinating man to see the universe. Rose had some of that going for her, Amy didn't really, she was never fleshed out enough and just stood around pouting and having brilliant insights. I want a companion who's not witty, talks like a real person, reacts like a real person, gets muddled up and would never come up with a plan or witty quip in such stressful situations, does not like the idea of having a sexual relationship with an alien God, and, I don't know, has some genuine emotion rather than just sentimentality and some approximations of realistic emotions. I want someone real.
I felt a bit annoyed at the new Moffat puzzle though, I mean what is the point? Why not try to tell a good story to keep me hooked, and not 8294582495 open questions with no possible hints? I mean there's no way to figure anything out because there's literally no information. It's like someone shaking a bit of tinsel at you, "look at the shiny shiny!", in an attempt to get me interested in future stories, rather than the stories themselves being interesting, they're just a vehicle for Moffat's puzzle.