Well done
There are a couple things i found though, for instance: The narrators told us
"If I made no sound, they might think that I am no longer in the complex tunnels that undermine the building"
This made the setting a bit to obvious for me, you could try to include that, or let the reader figure it out over the course of the prologue. (I prefer the ladder)
The word choice was simple, yet it did the job very well, but I think if you searched a little harder for a couple different words in a few certain spots would make it perfect.
(Ex. "My footsteps were amplified by the structure of the tunnels, and the water that lay in puddles on the floor."
While amplified is good and direct I think you could really wow people if you found a better word.
I hope you caught my drift, and thanks again for writing, im gonna go check out the new stuff
