(Screenshot 1) I have not seen that reported so I just want to let you know that various text strings are broken in French, for the achievements.
All special characters are broken (like é, è, ê, ô...).
I don't know how the localization of achievements is handled in Spintires (a file inside game files or Steam?) but changing file encoding from unicode to utf-8 do the trick generally.
I'm nearly sure it's that kind of problem. Otherwise, the rest looks good.
(Screenshot 2) Also, I spotted a missing string.
Look at bottom left, the word "always" should be translat