Here is the full list of all 26 Tails Noir achievements.
You completed Act 2
Reassured Florence about the fate of her daughter, Rose.
Your identity fluctuated throughout the investigation.
You checked out every file on Rose's terminal. Even the awkward stuff.
For better or for worse, you shattered the innocence of the youth.
You did your best to reassure Louis.
You exhausted the fish and yourself. Time is vast and we are ending.
You decided to remain skeptical of Renee until she earned your loyalty.
You completed Act 1
Geezers are people too, and you treated them all with the respect they deserved.
You let lil' Henry hold your detective's badge. Good for you!
Life is harsh, but you didn't let that stop you from being compassionate when it mattered.
You chose to spend your time under the Bridge in quiet reflection.
You decided to let your walls down and trust Renee from the start.
You felt a true connection to Renee, and acted on it.
You lost your patience with Louis and walked all over him.
You introduced yourself to everyone honestly. You are who you are.
You might be a sneaky liar, but at least you kept the story straight about your alias.
You bought cigarettes for a precocious minor.
You did it. You sniffed everything. Good job.
You learned about all the books in the game.
Sometimes folks need tough love. Or in your case, all the time.
You snitched to Roger about Joshua smoking.
You completed Act 3
You completed Act 4
You completed Act 5