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.
Unveil 40 Fulcrum stories
Unveil 20 Fulcrum stories
Unveil 1 Fulcrum story
Complete the game
Assimilate LEGACY
Solve 40 criminal cases
Complete Aeon Age Nexus Event
Assimilate AVATAR
Complete Atlantean Age Nexus Event
Complete Steam Age Nexus Event
Assimilate OBLIVION
Solve 30 criminal cases
Assimilate CHIMERA
Complete Lost Age Nexus Event
Solve 20 criminal cases
Complete Information Age Nexus Event
Assimilate RAGE
Solve 10 criminal cases
Solve 5 criminal cases
Solve 1 criminal case