Answer:
the cause of Otzi's death
Step-by-step explanation:
We note in the first passage that there's a brief description of the Killer, at least mention was made of the killer thereby giving the reader a sense of what caused Otzi"s death.
However, the second passage uses indirect language to describe not the killer but the sufferings of Otzi, thereby creating a difference in historical perspective on the cause of Otzi's death.