This was an enjoyable enough four-parter in which the characters all get to stretch their legs and have a bit of fun. Barbara becoming a goddess, Ian becoming a soldier, the Doctor getting engaged (lolwut?!).
Everyone seems to be enjoying themselves and taking the whole situation rather lightly, but then of course people start getting sacrificed and it all gets a bit scary. And it is yet another “we can’t get to the Tardis until we do x, y and z” story, which is predictable, but they wrap up quickly enough, so whatever.
As for the extra cast, the bad dudes were bad, good dudes were good, and they were all surprisingly watchable with a minimum of cringe. The action, as ever, was a bit laughable.
The sets were pretty good in this one. They had this massive landscape painting behind them which looked excellent, and all the costumes were ridiculously extravagant.
So far, then, we’ve had historical > alien > historical > alien > historial. I’m guessing the next one will be alien again?