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