Your files are not lost. You will be able to access them with your local root user, either through the command line or a GUI file explorer that supports actions as root.

According to Wikipedia, Deus Ex MD, Hitman, Life is Strange 1&2, and the new Tomb Raider trilogy all have native Linux ports.

https://en.wikipedia.org/wiki/Feral_Interactive

That’s pretty cool. Square Enix is one of the better AAA-publishers when it comes to Linux support, they had native ports for Deus Ex, Tomb Raider, Hitman and a bunch more.

Me writing this comment

For me it was the jump between Windows 7 and Windows 8. I hated the UWP apps, the “simplified” control panel an d the full screen and tiled start menu. It worked great as a phone UI but terrible on desktop. I used it for like a month and switched to Linux Mint, which I felt was closest to W7 at the time.

I like Flatpak just because it isn’t Snap