You need to work on your punctuation and sentence structure.
There are also a bits where the writing doesn't flow particularly well.("atop a large fortress" rather than "atop of a".)
His hair jet black and slicked back with gel, he has a broad skull structure like the ancient terrans would say "chiseled by the gods themselves." He turned his head to the left where he could see the inquisitor in his peripheral.
This for example.
You also mix up tenses a few times.
That said it's an interesting opening. I get the feeling there is a part of the narrative that is from the Inquisitor's viewpoint. (Yes/no?) It might be worth characterising his thoughts a bit more clearly.
looking right into his soul but that didn't really bother him.
Maybe add why it doesn't bother him. Inquisitor's are usually being of incredible conviction so perhaps he is convinced all of his actions no matter how bloody or brutal were for the betterment of the Imperium?