I laughed so loud I embarrassed myself: Hot with anticipation, like a woman in heat. If there was one thing better than a wet hooker, it was guns. Wonderful phrase and very fitting to the character.

Now, Typo Time:
And in those scant moments, Andre had ran to the basement armory..." should have been "had RUN."

And as he Andre passed the threshold, the lights went out... should have been either "As he passed..." or "As he, Andre, passed..."

In ...straining to push the words through the clouds of pain, “what are you?” the W in "what are you?" should be capitalized.

Same with the A in "are" in Andre coughed, “are you all right?”

"Set up" should be two words in ...began to setup a temporary residence..."

Him – afraid. Had! Did you mean "Ha!"?

As for content: I loved the action, and your pacing was great. But you did lose me for a moment when Eduardo began to talk about learning the Drowned's name. Was the opening of this piece a flashback? Or were you attempting to "flash forward"? Either way, that was bit confusing.

BTW, you have a thing about starting sentences with "And" in this section. I counted 4. I'm not a stickler about that. I do it myself when it is needed to connect two thoughts that don't play well together in a compound sentence, or for dramatic impact. But that isn't the case all of the time here. See if you can whittle out a couple of them.

All in all, you satisfied me as a reader. I wanted more, and that is at least half the battle in writing good fiction.