Here is the full list of all 13 Lucid9: Inciting Incident achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Have the option to choose to visit all available heroines.
Be unable to visit any heroine.
Read all the investigation scenes at school.
Get all the bad endings with the murderer.
Watch none of the Gover Mecher episodes in one playthrough.
Watch all the Gover Mecher episodes in one playthrough.
Complete common route
Select only the choices related to one heroine.
Pick the stall option as many times as you can without reaching a bad end.
Never select a wrong answer for the deduction sequence.
Never select or input a wrong answer for Shigure's puzzles.
Get a 100% on your pop quiz.
Never select a wrong choice in the initial encounter with Shigure.