Here is the full list of all 11 Ampu-Tea achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Broke a cup.
Robot arm powered up and ready for action - time for you to make your first hot drink.
Clear every object off the table.
Added milk to a drink
Added sugar to a drink
Played the game 500 times.
Added a teabag to a drink. BEFORE the water.
Added hot water to a drink. AFTER the teabag.
Really lose your temper.
Broke your arm. Again.
Finally made a perfect cup of tea.