Airless Advance

This is a depiction of what's going on in the Journals of Sally Acorn, specifically what Chris is up to on the planet of Periost, the innermost planet in the Coelest system. Sally is on Installation 05 right now enjoying herself. Chris on the other hand is braving the intense heat, radiation, not to mention completely airless environment of this planet with only three other men at his back. He could likely die here, but given the story, this may not be a possibility. 

EVA packs go fantastic on a planet like Periost, which is slightly larger than Mercury, and may possibly be artificial as a power generation center for the Forerunners. Things will become clear once the team breaches the surface and finds Julian Kintobor - if he's here at all. The robots are a good start, but it gets much more difficult from here.