I cannot help but marvel at how this stage was designed with such a large influence from the classic 1979 movie Alien. Here is my review:
The mood is very unsettling as you're being stalked in a dark, narrow corridor by a monster with hostile intent. There are at least 2 instances where your only option is to RUN, parallel to the choices Ripley makes in the Nostromo. The unsettling feeling is further exacerbated as you hear members of the research team scream into their headsets as they are getting slaughtered by the rogue monster. There are even 2 instances where you see, with your own eyes, members of that expedition getting picked off; dragged by the ankles into the darkness, and impaled by an appendage and carried off into the depths. Compound all this with your energy weapons not being as effective in certain areas, making resistance in some situations to be rather futile. Unsettling, indeed.
If the visual stimuli doesn't drive the point home, then the background music that plays sells the mood completely. Even the music playing here has the classic Jerry Goldsmith feel of Alien (for those that are aware that Jerry Goldsmith DID compose the score for Alien). I applaud the composer for the track used on this stage, lending that additional layer of tension, making this stage possibly the most frightening mission thus far.
The most recent attempt I've made at this stage was with my KDF crew, all armed with Klingon melee weapons (3 Bat'leths, 1 Mek'leth, and 1 with a non-Klingon polearm). The reckless bravado I exuded did little to negate the tension I had to fight against in this story, but it was so much fun...
...and let's not forget the hidden accolade to top it all off: "Game Over, Man!" (Ok yeah, the phrase was from the sequel, but still...Aliens, man.)
(Had to edit the first sentence, as my assessment came off more as a review than a critique.)