Here is the full list of all 44 Tokyo Dark achievements.
Save Reina ending
Don't have the contract signed
Apologize in police station
Help girls in arcade
Respond professionally to Goto in sewer
Helped maids
Discover what happened to the cat food
Knock out officer Mori
Pass on Saki's letter
Shoot bamboo in Kamakura
Run out of time in sewer
Enjoy a drink
Keep a clear head
Draw gun in sewer
Shoot Reina in sewer
Attempt to arrest Reina
Run from sewer
Use cherry blossom branch in Kamakura
Switch off police station cameras
Use fire alarm in police station
Pick lock in police station
Threaten Goto in sewer
Take a life
Use force to get information in arcade
Use force to get maids to talk
Use force to get information in cat cafe
Hold a hostage
Use force to get contract signed
Butterfly club ending
Daizo ending
Warehouse ending
Revenge Ending
Purification ending
Arrest Ending
Leave Tanaka ending
Bring Tanaka home ending
Stay together ending
Suicide ending
Insanity ending
Cat ending
Mask Bearer ending