First off, the suggestions:

- Look over things again for grammatical errors, such as putting punctuation inside the quotations.
- I wanted to read more about the relationship between Cyrii and Chloe. If you turn this into a novel, definitely go into that a lot. ~
- Consider the narrator as more than just a way to tell the story. Make sure that he's a part of it, too, because he is. You said "everyone in the lab was dead except for Cyrii and Chloe..." and presumably the narrator, I thought. If this is true, I'd add something like "everyone else" just for clarity.

On that point, I love what you've already done with the narrator. It's a very interesting way to see the story play out, and the voice is different than it would have been has Cyrii or Chloe told it.