Here is the full list of all 20 Crime O'Clock achievements. It takes around 15-20 hours to unlock all of the achievements on Windows.
Solve 5 criminal cases
Unveil 1 Fulcrum story
Solve 1 criminal case
Solve 10 criminal cases
Solve 20 criminal cases
Solve 30 criminal cases
Solve 40 criminal cases
Assimilate RAGE
Assimilate CHIMERA
Assimilate OBLIVION
Assimilate AVATAR
Assimilate LEGACY
Unveil 20 Fulcrum stories
Unveil 40 Fulcrum stories
Complete Atlantean Age Nexus Event
Complete Lost Age Nexus Event
Complete Steam Age Nexus Event
Complete Information Age Nexus Event
Complete Aeon Age Nexus Event
Complete the game