Here is the full list of all 22 Contraption Maker achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Complete this scenario using only Ropes, Rope Pulleys, Rope Hooks, Teeter Totters, and Bowling Balls.
Complete this scenario.
Make & publish a puzzle with at least 20 parts.
Solve 30 community puzzles.
Make & publish a contraption with at least 20 parts.
Solve 220 official puzzles.
Complete this scenario without using the Dog Bone, Dog Food, Dog Treat, Dog Whistle, or the Cat.
Solve your first scenario.
Solve 150 official puzzles.
Knock out Tim 5,000 times.
Kill 15,000 zombies.
Run the hamster for a total of 1,000 miles.
Run the hamster for a total of 500 miles.
Edit a community contraption from the Workshop.
Pop a total of 2,500 balloons.
Solve 100 official puzzles.
Solve 50 official puzzles.
Blow up 500 cumulative tons of explosives.
Accumulate 10,000 total basketball bounces.
Solve your first official puzzle.