Here is the full list of all 13 The Flower Collectors achievements.
Never lied to Melinda
Find all scooter parts
Finish the game (all chapters)
All side stories completed
Shot Diego
Didn't shoot Diego
Cooperated with the police
Completed the Waiter's Story
Completed Eusebio's Story
Completed Carmen's Story
Completed Doña Anna’s Story
Completed Lola's Story
Completed the Mechanics' Story