The PAYDAY Add-on for Goat Simulator has 18 achievements.
Listen to the whole pan flute song.
Find all the trophies on the Payday Level.
Win 3 hands at a Blackjack table.
Just finish that one LAST job.
Show off your vehicle air control skills in the desert.
A Trip to the Moon.
Use a cannon to travel to the Island in the Sky.
Throw 5 police officers into prison.
Wear 30 masks at once.
Enable the hydraulic cars.
Charm a cow using Valentino Salami.
Use Dolph Spaghetti to lift a crewmember on top of the tallest building.
Hogtie 50 NPCs.
Spray the dancers using Humphrey Ciabatta.
Lick all crew members together to form a Goatipede.
Gather the crew for some drive-in movies.
Place a Hogtied NPC on the train tracks.
Headbutt someone out of their car, then run them over!