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