I feel like I want to watch the beginnings of Dr Who episodes and the ends, but not so much the middle bits.
I think I would have loved this episode if I just read a summary of it. There were lots of things that happened in it that were good, exciting things, but I honestly lost interest in the episode halfway through. The key plot points were good - but everything around them was just a bit meh, lots of running through tubes or slow motion low budget shoot-bang sections.
This sounds much more negative than I mean it to be as there were bits that I thought were great. The only thing I didn't really like was what felt like slightly hamfisted THIS IS IMPORTANT writing with the whole thing about soldiers.