Here is the full list of all 32 Police Tactics: Imperio achievements.
Solve 25 cases (including story missions).
Employ four officers simultaneously.
Finish a Story mission.
Catch a speeding vehicle with a camera van.
Own 12 police cars simultaneously.
Obtain a Speeding Camera Van.
Own 3 helicopters simultaneously.
Upgrade a room to maximum level.
Fill all bonus slots.
Purchase a bonus room.
Have 12 employees in your HQ.
Promote a rookie to an Officer.
Purchase a vehicle.
Respond to a crime in under 15 seconds.
Fail to solve 10 cases.
Unlock the second district.
Unlock all districts in the city.
Upgrade all rooms to maximum level and fill all bonus slots.
Solve a case after your Investigators failed to gather evidence.
Arrest a group of criminals while they are on the way to commit a crime.
Raise the average safety of your unlocked districts above 99%.
Remove 5 speeding areas.
Remove a Crime Ring by arresting its leaders.
Remove 3 Crime Rings.
Remove crime ring under 180 seconds.
End a car chase under 20 seconds.
Stop an escaping car with a roadblock.
Finish the Story.
Fail a story mission
Solve 100 cases (including story missions).
Solve 250 cases (including story missions).
Lower the average safety of your unlocked districts below 10%.