His brain was slowly booting up when he heard what she had just said.
Because, for some time, was really thinking that he had something wrong. Among all of the missions that were available within the database of the Mission Administration Office, not even he would be crazy enough to choose anything related to the Arachinds.
His sense of self-preservation was something that was too great for him to enter the area that was swarming with Arachnids. While he was obviously planning to choose a Mission that had very high rewards because he wanted to make a lot of points from it, he would never really choose anything related to the Arachnids out of his free will.
He was just a Delta-Grade Psyker, and even though his combat prowess was far above any other Delta-Grade Psyker, that didn't change anything about the fact that he never wanted to go near the Arachnids until he was at least Beta-Grade Warrior and Psyker.