Here is the full list of all 32 Shadows of Doubt achievements.
Steal a gun and throw it in the sea
Take out a loan from a loan shark
KO a debt collector
Complete the ‘Dead of Night’ case
Escape from hospital without paying your medical fee
Install all sync disks in a single game
Complete a murder case without violence
Complete a murder case without being seen trespassing
Detect a fingerprint while highly inebriated
Pay back the starch kola sync disk loan
Buy a new apartment
Retire
Pin 100 unique things to your case board(s) in a single game
Retire without KO’ing anybody
Retire without getting KO’d
100% complete a citizen profile
Drink 100 coffees
Drink 100 kolas
Eat 100 donuts
Eat 100 Croque Monsieurs
Put 100 junk items in the trash
Search through the trash 20 times
Have a shower to remove stinkiness
Find a hidden door key
Fall down an elevator shaft from 4 floors up
Hide from a pursuer using a newspaper
Use a door wedge to trap somebody in a bathroom
KO someone by barging through a door
Hire a hotel room
Throw an expensive item through a hotel room’s window
KO everybody in the city at least once
Return a lost item