Here is the full list of all 32 Police Tactics: Imperio achievements.
Unlock the second district.
Lower the average safety of your unlocked districts below 10%.
Employ four officers simultaneously.
Have 12 employees in your HQ.
Raise the average safety of your unlocked districts above 99%.
Purchase a bonus room.
Upgrade a room to maximum level.
Catch a speeding vehicle with a camera van.
Obtain a Speeding Camera Van.
Respond to a crime in under 15 seconds.
Solve 25 cases (including story missions).
Finish a Story mission.
Purchase a vehicle.
Promote a rookie to an Officer.
Fail to solve 10 cases.
Unlock all districts in the city.
Fill all bonus slots.
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.
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
Own 3 helicopters simultaneously.
Own 12 police cars simultaneously.
Solve 100 cases (including story missions).
Solve 250 cases (including story missions).