The The Goat Simulator Heist Add-on for PAYDAY 2 has 12 achievements.
In the first day of the Goat Simulator job, secure 6 goats in the escape truck within 1 minute of it arriving. Unlocks the "Scout Goat" mask, "Goat Eye" material and "Giraffe" pattern.
Complete day 2 of the Goat Simulator job within 4 minutes from when the escape car is available. Unlocks the "Goat Goat" mask, "Flamingo Eye" material and "Illumigoati" pattern.
In the Goat Simulator job, throw a goat in the air, kill one enemy and catch the goat before it lands. Unlocks the "Mastermind Goat" mask, "Hay" material and "Goat Face" pattern.
In day 2 of the Goat Simulator job, send all goats in separate cages on the OVERKILL difficulty or above. Unlocks the "Slick Goat" mask, "Tongue" material and "Fur" pattern.
Complete the Goat Simulator job on the Normal difficulty or above.
Complete the Goat Simulator job on the Hard difficulty or above.
Complete the Goat Simulator job on the Very Hard difficulty or above.
Complete the Goat Simulator job on the OVERKILL difficulty or above.
Complete the Goat Simulator job on the Death Sentence difficulty.
Complete the Goat Simulator job on the Death Wish difficulty or above.
Complete the Goat Simulator job on the Mayhem difficulty or above.
Complete the Goat Simulator job on the Death Sentence difficulty with the One Down mechanic activated.