Int: game design lab
Hideo Kojima: "You know, I am quite the fourth-wall breaker."
Hidetaka Miyazaki: "You are like little baby. Hold my sake."
Yes folks: games design genius Hidetaka Miyazaki has done it again!
Steam players of Sekiro: Shadows Die Twice have been widely reporting an issue with the game corrupting their save file. It seems that this is happening when the game is not closed down properly (go into the menu, select 'quit game', then wait for the main menu and exit again). However, many of those reporting the problem say it happened when the game itself crashed.
Which is not exactly ideal. As a long-term Souls player this is not unheard of, even going back to Demon's Souls this kind of thing would happen every so often to some unlucky traveller whose console had crashed, and it's popped up infrequently in the wider Souls and Bloodborne communities. Obviously something about Fromsoft's save system (which is continually auto-saving) just can't handle hard crashes, but that's not exactly a consolation to any shinobi who've just lost 30 hours of progress.
The nature of a new PC release being what it is, Steam players might want to hold off on diving in until there's some sort of fix deployed. Or like me, you can play it tonight anyway and just offer up a little prayer to the top image.
I've contacted Activision PR to ask how widespread this issue is and whether there's some sort of fix incoming, and will update with any response.
If this hasn't happened to you, hurrah! In terms of precautions, you might want to enable Steam cloud saves or even make a manual backup (note that Steam's 'backup game files' option does not back-up save files). Meanwhile all we can do is admire that Hidetaka Miyazaki has come up with yet another way to break the will of players.