Here is the full list of all 35 Postal III achievements.
Make Venezuela peacemakers go home.
Take out all the criminal scum infesting Catharsis!
Arrest eco zealots leader.
Piss 100 gallons of urine.
Taze 200 victims.
Destroy 50 cars.
50 kills using boomerang machete.
Suck up 500 items with the shop vac.
100 kills using machete in melee.
Smash 50 windows.
200 kills using M-60.
50 badgersaw kills.
Beat the game once. No restrictions apply. Everyone's a winner.
300 headshot/decap kills.
Finish your business with Krotchy.
Escape from prison.
Return Thegways to the owner
Injure yourself.
Choose path for the first time.
Disobey orders, given to you, and see what happens.
50 kills using cat.
50 kills using bees.
150 kills using fire.
Kill/incapacitate 235 terrorists.
Beat game with zero kills.n(zombies and bosses don't count)
Arrest 200 perps.
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.
Kill 1000 unarmed bystanders.
Complete game killing only males.
Spend 900 seconds or more in catnip bullet time.
Respawn 20 times.