This looks really awesome. Once it is in hard copy I will buy a copy if for no other reason than to have it on my shelf. I am hesitant to pick up the pdf because it's not clear to me how any part of the game plays. Could you speak to that a little?
Just found the preview version: https://sandypuggames.itch.io/hellpiercers-preview-edition
There's a handful of preview and public editions floating around, with most of them showing the game in a fairly finished state mechanics wise, lacking mostly polish, fixed, layout, art, and some secondary content. I'll consider updating this page with a free edition as a demo but it'd likely be the preview edition re-uploaded so, maybe just a link to it somewhere.