There are a lot of special achievements in "Reverse Prosecutor 1&2 Edgeworth Selection", and Prosecutor Edgeworth is one of them, which is too much. If you want to achieve this achievement, you only need to play logic chess with Prosecutor Ichiyanagi. When you say something you shouldn't say, you can unlock it.
Reversal of Prosecutor 12 is too much. How to achieve the achievement of Prosecutor Edgeworth
That's too much, Prosecutor Edgeworth
When playing logic chess with Prosecutor Ichiyanagi, I said something I shouldn’t have said
When playing logic chess with Ichiyanagi, select "You are a failure as a human being!" to unlock the achievement
Can be entered from the "Questioning Eyewitness Testimony" chapter and pushed to the logical chess section