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