That seems like a very niche thing, I’m happy with my 100% achievements and don’t want that status gone. What you could do instead is create a new steam account and steam family share your games to that new account to play again with no achievements.

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This is a recent version of a guide I used to get started with home servers. I learned a lot following it and I can now manage my own home server with a lot of apps.

https://www.smarthomebeginner.com/traefik-v3-docker-compose-guide-2024/