Hey to be more specific several years ago i had this OCD about broken achievements that's why i used SAM to unlock some achievements but i didn't know about the site astats that keeps tracking of it and thus i was marked a cheater there.
They are very strict and very hard to get that mark removed, nor did i know what games i had to lock back (with back then 5000 games that proved hard) so why i just locked back all my achievements that was possible (even many ones i just gotten legit).

While unlocking is not done, according to astats, locking them back they absolutely have no problem with if you want to redo a game again achievement wise.