verified it 3 different times, always said a file was missing and downloaded it, still crashed on launch
someone on the steam forums said firewall might be fucking with it, turned it off, still crashed
restarted PC, steam, still crashed
i'll just use that 9GB on something else for now, and redownload/try again later*
spoiler (click to show/hide)
*after i've played every single other game i own on steam. maybe.