Battlefield 1 - Single-player Achievements Not Unlocking - PC

Hello @jd62908 and thank you for those kind words, toward our support. I know unlocking those achievements can bу frustrating sometime. But unfortunately, the best course of action, is to try to perform tasks required to unlock them, one more time. For achievements not to unlock can be an issue of poor Internet connection as well, so check this article here, perform troubleshooting steps, described there, and try to get those illusive achievements one more time. 

Cheers,

Archi