Disclaimer: This Review is the exact same, as my Review to 'The Age of Steel', both Episodes are Part of the same Story, both leave me with the same Thoughts

This one is very much frustrating, there are great things to it and I enjoy the parallel universe aspect of it all (while it’s far away from the best execution). I absolutely loathe this Cybermen Design, it’s horrible, not the worst but easily one I very much dislike. I don’t really want to repeat points others did, but yeah, the whole Origin story part of it. There are some great moments, that remember what Cybermen are, then we get stuff like the entire Catchphrase Thing with “Delete” feeling more appropriate for a generic robotic enemy not the Cybermen.
Part of me wonders if this Story should have focused more on the alternative Universe Part. Since that part does easily work for me the most, meanwhile the Cybermen Part of this entire Story leaves me mixed. It’s by far not the worst outing for them in NuWho (Shoutout to whatever they were in the Smith Era), but yet it does bring out some of the very worst aspects that later got used again and again.