Glad I could help.

Hello Cian,
I've just reinstalled the game, so it is up to date, all dlcs installed. I started Crucible with default settings.

Played for a while.

No achievement. I had no problem with any other achievements other than Crucible ones.
Output

Hello Lee,

I attached requested files.

DxDiag.txt

output_log.txt

Best wishes for You and whole Brightrock Games team,
Martin

Hello Lee,

Unfortunately, those achievements are not unlocked both in the game, as well as in the GOG Galaxy. Multiple restarts of the game and tries to achieve them did not solve the issue. I had no previous problems with any other achievements.
https://imgur.com/a/lNg4YNI

Best regards,
Martin