Thanks for waiting! Here is my feedback (I'll be writing here as I go along)
Opening line: Starting with a dialogue can be powerful, I'm not one of the people who think you must start with prose. However, I do think that your opening line should give the reader a sense of belonging. It should excite, intrigue and give the reader an idea of what to expect (to a degree). Here is an opening line I really like from Strange the Dreamer by Laini Taylor:
On the second sabbat of Twelfthmoon, in the city of Weep, a girl fell from the sky. Her skin was blue, her blood was red.
Very simple, but immediately checks off all the points you need to hit as a writer!
I'm aware that I'm talking about a novel and yours is a webnovel, but I think it's still worth thinking about!
I really like the introduction of Subject XOV! I was very interested in their(its?) appearance, only to find out it escaped! The intrigue :chefskiss: I don't know why I'm not scared about their escape just yet, it just sounds cool that they have, so far. If you want to really drive home the terror the characters are feeling, I would probably recommend using sensory details like touch, smell, etc
I really liked how deranged(?) the Director with the scalpel sounded though! Makes me wonder who is the real monster here.
Final thoughts because I was immersed halfway through and forgot to comment on the little things:
Very atmospheric writing! The opening line lets me down more now that I've seen what you're capable of. Don't get me wrong, it's not a bad opening and I liked the episode overall (enough that I got lost in reading it!). I just believe you have the potential to make this so much stronger. I'd love to help you with edits if/when you finish writing the whole story and if I have time to spare so just let me know!