Here is the full list of all 25 The 25th Ward: The Silver Case achievements.
Watched all endings.
Completed all chapters.
Completed *06 YUKI
Completed *05 MISOGI
Completed *04 SIZUKU
Lost the game.
Completed *03 YOGORE
Completed *02 TIGIRI
Completed *01 NAGARE
Talked to Red a total of 51 times.
Completed “05 moon over 25
Completed “04 the lunar orbit
Completed “03 about nighthawk
Completed “02 quiet cradle
Completed “01 underground theater
Walked 2.5 km on the chapter select screen.
Completed #06 white out
Completed #05 electride
Completed #04 digital man
Completed #03 boys don't cry
Completed #03 without losing to any of the hitmen.
Completed #02 good looking guy
Completed *00 UTSUTSU
Completed #01 new world order
Completed #00 prototype