I just finished watching Part 2 with a friend.
Editing a video in this manner takes significant time, and as a father with an 8-month toddler, time is of essence.
Thank you for taking the extra time to edit in text and "radio chatter", it definitely enhanced the experience. (https://openxcom.org/forum/Themes/InsidiousV1-k/images/post/thumbup.gif)
In (Part 1: 4:32 (https://youtu.be/xFGUEleRL0A?t=271)) your use of pointers to highlight the entry points was a nice touch.
That Coelacanth is a bullet magnet! (Part 2: 4:12 (https://youtu.be/DRaKyZBPFC4?t=252) 11:56 (https://youtu.be/DRaKyZBPFC4?t=716) 12:04 (https://youtu.be/DRaKyZBPFC4?t=722))
Nice job getting it and the rest of your soldiers out in one piece.
(Part 2: 17:46 (https://youtu.be/DRaKyZBPFC4?t=1066)) was a good use of the time during suspended gameplay. I agree with you about the ambiance. As creepy as the original battlescape music in X-COM: UFO Defense was, there is something about the score of X-COM: Terror From The Deep that just seems to ratchet up the tension.
If you like this style and would like to see more of it, or a different type of it (like very serious tone, darker tone, or even more funnier tone of speech) please comment under the video.
Your current style is very entertaining, I'm looking forward to seeing the rest of your campaign.