Full list of all 100 PowerWash Simulator achievements. It takes around 40-50 hours to unlock all of the achievements in the base game on Windows.
The base game contains 40 achievements, and there are 6 DLC packs containing 60 achievements.
Complete the Conch Street job
Complete the Bikini Bottom Bus job
Complete the Krusty Krab job
Complete the Patty Wagon job
Complete the Invisible Boatmobile job
Complete the Mermalair job
In the Conch Street job, complete Patrick's Rock, Rock Hinge and Rock Underside last
In the Krusty Krab job, complete the Chum Bucket first
In the Patty Wagon job, complete the Pickles first
In the Mermalair job, complete Patrick's Identity Card first
Complete the Doc Brown's Van job
Complete the Time Machine job
Complete the Clocktower job
Complete the Holomax Theater job
Complete the Doc's Time Train job
Watch the Time Machine reappear
In the Clocktower job, ring the bell
In the Holomax Theater Job, activate the holographic shark
In the Holomax Theater job, clean the Grid Wall first
In the Doc's Time Train job, clean the Flux Capacitor and its Particle Colliders first
Complete the Land Raider job
Complete the Redemptor Dreadnought job
Complete the Rogal Dorn Battle Tank job
Complete the Imperial Knight Paladin job
Complete the Thunderhawk job
In the Land Raider job, complete the "Ultramarines II" Plaque first
Completely clean the Redemptor Dreadnought using only the yellow nozzle
In the Imperial Knight Paladin job, complete the Tilt Shield and Tilt Shield Purity Seals first
In the Rogal Dorn Battle Tank job, complete the Stowed Shovel first
In the Thunderhawk Job, complete the Retro Thrusters first
Complete the Wonderland Entrance Hall job
Complete the White Rabbit's House job
Complete the Caterpillar's Mushroom job
Complete the Mad Tea Party job
Complete the Queen of Hearts' Court job
In the Wonderland Entrance Hall, attempt to climb out of the rabbit hole using a ladder
In the White Rabbit's House, complete all Clocks on the Clocks Wall first
In the Caterpillar's Mushroom, clean the Caterpillar's Cocoon last
In the Mad Tea Party, balance on the Strawberry on the topmost cake on the Cake Stand for 10 seconds
In the Queen of Hearts' Court, roll the pink Croquet Ball onto the Croquet Finish Heart
Complete the Duloc job
Complete the Hansel's Honeymoon Hideaway job
Complete the Shrek's Swamp job
Complete the Fairy Godmother's Potion Factory job
Complete the Dragon's Lair job
In the Shrek's Swamp job, clean the Outhouse Door and Outhouse Door Handle first
In the Duloc job, interact with the Information Stand Lever
In the Hansel's Honeymoon Hideaway job, wait in the Onion Carriage for 30 seconds
In the Fairy Godmother's Potion Factory job, run on the Running Wheel for 20 seconds
In the Dragon's Lair job, clean the Gallery Tapestries last
Complete the Wallace & Gromit's Dining Room & Kitchen job
Complete the Wallace & Gromit's House job
Complete the Knit-O-Matic job
Complete the Wallace & Gromit's Vehicles job
Complete the Moon Rocket job
In the Wallace & Gromit's Dining Room & Kitchen job, activate the Toy Train
In the Wallace & Gromit's House job, roll the football under the pond
In the Knit-O-Matic job, activate the Auto-Wash
In the Wallace & Gromit's Vehicles job, clean the Techno Trousers first
In the Moon Rocket job, clean the paintings inside the rocket first