Here is the full list of all 12 Parking Cop Simulator achievements.
You were rude to Vanessa.
Complete the first level.
Complete the first day.
The law comes first.
You let a sinner go.
Complete the second day.
Complete the third day.
Complete the fourth day.
Go through every floor in the parking garage.
Complete the fifth day.
Complete the game.
Listen to the old man's tale.