The Adventure Time Pack Add-on for PowerWash Simulator 2 has 10 achievements.
Complete the Living Room job
Complete the Pizza Sassy’s job
Complete the Ice King’s Castle job
Complete the Candy Vehicles job
Complete the Tree House job
Pet BMO in the Living Room job
In the Pizza Sassy’s job, clean all three doors first
In the Ice King’s Castle job, clean the Handbag last with the Cage Door closed
Complete the Candy Vehicles job using only the Adaptable Nozzle
In the Tree House job, reach max height on the Jake Scissor Lift