Aslaat: Vambrace: Dungeon Monarch
DarkLord
Dungeon Strategist

I let them know, but they responded as follows:
'The issue you mentioned is managed by the publisher rather than the developer, and the details have already been shared with them.'

Rogue Trader
Achievements seem to be broken since the release of the Lex Imperialis. I have reported this twice using the in-game bug report system, as well as via email and Discord. Nothing has happened so far.

Rise of the Tomb Raider
Looking for Trouble
Quick and Painless
Complete History of Witchcraft
Rapid Recovery
The Witch Bottles
Season of the Witch
Truth Seeker
Voices of the Past
Master Fletcher
Way to Go
Bravo's Legacy
Quite the Collector
Golden Child
Craftswoman
Woman of the People
Tomb Raider
Good Samaritan
Gilded
Untouchable
Fight the Fear
Weaponsmith
The Wraith of Siberia
Well Begun Is Half Done
Witch Trials
These Belong in A Museum
Demon in the Dark
Witch-Hunt
Compulsive
Dead Ringer

IMHO, since this title is in the GOG Preservation Programme, GOG itself seems to be responsible for fixing these issues, doesn't it?