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.
Reach 3500 rpm.
Boil 100 ml of water.
Click all links.
All is forgiven if you appease the algorithm (or just say you're sorry).
Run the engine for 10000 revolutions.
Boil 25 ml of water.
There's only so much poking a developer can take.
Run the engine for 1000 revolutions.
Reach 650 rpm.
Use the steam whistle.
Run the engine for 100 revolutions.
Generate a 28 inHg vacuum in the boiler.
Generate a 15 inHg vacuum in the boiler.