How could he have thrown her down the stairs? How is it possible that, all of a sudden, neither of them is on the stairs any more when the brain takes over? Nowhere does it say that Feng jumped.

Climb! Off the ladder!" I shouted. My mouth tasted like copper and synthetic adrenaline. I grabbed her harness and practically threw her onto a narrow, rust-eaten catwalk hugging the silo wall.
...
It hit the ladder right where we just were.

So the clearly visible blood is from a corpse that has already mummified naturally?
It looks more as though Old Cheng the Unreliable and the developer of both are back. I wonder if he’s satisfied?

Has 47 smashed the door down yet? He’s taking a long time to turn up.

Where’s the herd (lump of brains) hanging out? Up the stairs, levelling up like the Highlanders (you gain the knowledge and experience of those you defeat or consume).

❤️🍀