Meh, pretty underwhelming, all in all. It had some good moments, especially the introduction of the Ice Warrior but everything else (e.g. the conflict between the political commissar/first officer (I'm not sure what he was actually supposed to be) and the captain, the crazy professor) just felt a bit contrived and by-the-numbers without really paying off. The dialogue felt off, too, not like people would talk in that situation.
I did have to chuckle at all those Soviet soldiers running around with what would have been Makarov pistols drawn. Those things were notoriously imprecise - even if they were fastened they wouldn't always hit the same spot. It's only fitting that no one actually fired any of them.