Our Dark Heresy group was coming to the conclusion of an important chapter and the beginning of the end for the campaign. We had spent the best part of seven sessions on the planet of Brimstone, a planet of our own devising in our little patch of space, the Onus Region.
The planet was a planned stop-off for the Acolytes to tie up some loose ends from a previous mission, specifically tracking down and stopping the Arch-Heretek Hieronymous Vyle, from enacting any more atrocities against the Imperium of Man. He is a master geneticist, genius cryptographer and bitter rival of the Adeptus Mechanicus as an organisation, believing they are too short-sighted and wrapped up in bureaucracy to achieve any meaningful progress.