Here is the full list of all 19 PataNoir achievements.
Lisa was arrested
Solved the case
Lisa escaped punishment
Drove up the mountain road
Arrived at the vacation house
Entered the apartment
Arrived at the casino
Talked to the pirate
Entered the gardens
Arrived at The Baron's mansion
Started a new game
Completed the tutorial
Went out in a blaze of glory
Let Lisa go
Reached all the endings
Killed Allan Jameson
Told The Baron about Lisa
Watched the music video
Got lost in the curves of a beautiful woman