Full list of all 18 Steam Engine Simulator achievements. It takes around 20-25 hours to unlock all of the achievements in the base game on Windows.
The base game contains 16 achievements, and there is 1 DLC pack containing 2 achievements.
Boil 10 l of water.
Run the engine for 1000000 revolutions.
Boil 1 l of water.
Run the engine for 100000 revolutions.
Be questioned by the void.
Boil 100 ml of water.
Reach 3500 rpm.
Run the engine for 10000 revolutions.
Reach 650 rpm.
All is forgiven if you appease the algorithm (or just say you're sorry).
There's only so much poking a developer can take.
Boil 25 ml of water.
Run the engine for 1000 revolutions.
Click all links.
Run the engine for 100 revolutions.
Use the steam whistle.
Generate a 28 inHg vacuum in the boiler.
Generate a 15 inHg vacuum in the boiler.