Here is the full list of all 35 Postal III achievements.
Finish your business with Krotchy.
Take out all the criminal scum infesting Catharsis!
Arrest 200 perps.
Escape from prison.
Kill 1000 unarmed bystanders.
Respawn 20 times.
Spend 900 seconds or more in catnip bullet time.
50 kills using bees.
150 kills using fire.
Smash 50 windows.
50 kills using cat.
Beat the game once. No restrictions apply. Everyone's a winner.
200 kills using M-60.
300 headshot/decap kills.
100 kills using machete in melee.
Destroy 50 cars.
Return Thegways to the owner
50 kills using boomerang machete.
Taze 200 victims.
Piss 100 gallons of urine.
Choose path for the first time.
Suck up 500 items with the shop vac.
Disobey orders, given to you, and see what happens.
50 badgersaw kills.
Injure yourself.
Kill/incapacitate 235 terrorists.
Beat game with zero kills.n(zombies and bosses don't count)
Kill no animals in one playthrough.
Complete game using only melee.
Complete game using only the pistol.
Complete Good path without falling off.
Euthanise 30 elderly folks.
Complete game killing only males.
Make Venezuela peacemakers go home.
Arrest eco zealots leader.