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