Here is the full list of all 32 Apollo Justice: Ace Attorney Trilogy achievements.
For being awarded all other accolades
For playing the game in any one of the available costumes
For completion of the Special Episode of Spirit of Justice from its opening chapter
For looking into the true nature of ladders and stepladders
For having thoroughly examined Charley, the houseplant
For having examined Dhurke's written order in the rebel hideout twice in Episode 3 of Spirit of Justice
For completion of Episode 5 of Spirit of Justice from its opening chapter
For having examined the overturned urn in front of Inga's private quarters with Apollo and Athena in Episode 5 of Spirit of Justice
For having heard all about Apollo's situation at work
For completion of Episode 4 of Spirit of Justice from its opening chapter
For completion of Episode 3 of Spirit of Justice from its opening chapter
For having performed every forensic technique at least once in all three games
For completion of Episode 2 of Spirit of Justice from its opening chapter
For choosing "Her life choices" during revisualization in Episode 2 of Spirit of Justice
For having presented Trucy's notebook to Athena before returning it to Trucy in Episode 2 of Spirit of Justice
For completion of Episode 1 of Spirit of Justice from its opening chapter
For completion of the Special Episode of Dual Destinies from its opening chapter
For pressing DePlume and listening to Blackquill's take on what ought to be the featured attraction in the Special Episode of Dual Destinies
For completion of Episode 5 of Dual Destinies from its opening chapter
For completion of Episode 4 of Dual Destinies from its opening chapter
For answering "Love" during Detective Fulbright's psyche-lock in Episode 4 of Dual Destinies
For completion of Episode 3 of Dual Destinies from its opening chapter
For having presented Phoenix with the Themis Herald Extra in Episode 3 of Dual Destinies
For completion of Episode 2 of Dual Destinies from its opening chapter
For completion of Episode 1 of Dual Destinies from its opening chapter
For completion of Episode 4 of Apollo Justice: Ace Attorney from its opening chapter
For choosing "Guilty" as the jurist in Episode 4 of Apollo Justice: Ace Attorney
For completion of Episode 3 of Apollo Justice: Ace Attorney from its opening chapter
For having learned about Trucy's monthly allowance in Episode 3 of Apollo Justice: Ace Attorney
For completion of Episode 2 of Apollo Justice: Ace Attorney from its opening chapter
For completion of Episode 1 of Apollo Justice: Ace Attorney from its opening chapter
For having presented evidence during your first cross-examination