How to remove certain achievements from the game

[alecika]

--FOR CONTEXT--
When 2.0 released, I opened one of my worlds (where I had everything) and most of the new achievements got unlocked instantly, and I don't want that, because I planned to unlock them organically in a new playthrough. I used SAM to remove them, but now when I open the game they unlock again. Anyone know how to fix this? I moved all my saves (in case it had something to do with it) and stuff but no use. I also saw the "delete all achievements" button, but I'd like to keep my old achievements dates.

[IsaacOscar]

What's SAM?
Also are you editing the files in C:\Program Files (x86)\Steam\userdata\<your steam ser number>\427520\remote?

[alecika]

What's SAM?
Also are you editing the files in C:\Program Files (x86)\Steam\userdata\<your steam ser number>\427520\remote?

SAM is Steam Achievement Manager - you can unlock/restore any achievement for steam games. Also, I didn't try editing the files, I will do that and update the situation. Thanks!

[alecika]

What's SAM?
Also are you editing the files in C:\Program Files (x86)\Steam\userdata\<your steam ser number>\427520\remote?

OK, found the file. How do I reset certain achievements? What am I supposed to be removing from that file?

[IsaacOscar]

What's SAM?
Also are you editing the files in C:\Program Files (x86)\Steam\userdata\<your steam ser number>\427520\remote?

OK, found the file. How do I reset certain achievements? What am I supposed to be removing from that file?

Oh, sorry, I thought you had an editor already.

That file is a binary file, with a mostly undocumented file format https://wiki.factorio.com/Achievement_file_format
So unless you want to spend the time reverse engineering all the space age achievements, all you can do is delete the whole file unfortunately.