And that's a very good point: I am coming at this with the previous books unread, so I can only judge it on its own merits.
If Cuillioc has been sent there to have his will broken, is it working? At the moment, the conditions in the mine don't seem to be happening
to him, he seems to be observing them, and actually he's getting stronger, his leg is mending and his punishments are less than the other slaves. Surely close attention would be paid to him, Vaz would order 'special' treatment, and it wouldn't be lesser punishment, it would be more? But monitored so they don't actually kill him?
I think if I saw Cuillioc more reduced, then I'd believe it. (And the piece I wrote would go, because he's too positive by far...). The para below has no sense of reduction/degredation/exhaustion in it. Cuillioc is surviving, and the reader may not actually believe that pain of 'strained muscles' will not overcome exhaustion - if you're truly exhausted, pain will not keep you awake, you'll slump into a stupor. He should be an automaton by now, barely surviving, driven only by a very faint will to live. By all means have the detached narrative, but I think more description of what Cuillioc is undergoing will help.
Yet for Cuillioc sleep was not always possible, as exhaustion competed with the pain of strained muscles when the labor had been particularly arduous. How many days and week passed in this way he had no way of counting.
Oh, if the rumbling is an earthquake, that's fine, but maybe have the earth shake a little around them and dust to fall, whilst they're all in terror that it's going to be
their shaft that will collapse.