Here is the full list of all 34 Police Shootout achievements.
Finish mission Stealing merchandise
Arrest the informant in the warehouse
Use fazer
Finish mission Stealing fuel
Use shotgun in a gunfight
Arrest the tank cleaning center manager
Finish mission No contact with security
Arrest the informant in the supermarket
Finish mission Gas station hostage
Use the car alarm at the gas station
Enter the gas station through the window
Finish mission Stalker at the motel
Finish mission Parking lot brawl
Collect drugs at the supermarket
Save a child in the supermarket
Take the civilians out of the supermarket
Finish second tutorial
Finish first tutorial
Finish mission Brawl at the garage
Finish mission Fight at the bar
Finish mission Screaming at the warehouse
Finish mission Suspicious transport
Finish mission Abandoned car
Call for backup in an abandoned factory
Collect drugs at the motel
Pay Lola for the information
Make noise in the warehouse
Enter the workshop owner office through the window
Arrest the workshop owner
Enter the warehouse through the window
Complete all missions
Get the max Stealth skill level
Get the max Combat skill level
Get the max Negotiations skill level