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