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