Here is the full list of all 20 MatchyGotchy achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Heal your stars a total of 10 times.
Have your star fall asleep 10 times.
Win the game! Get 100% explored on Xanadu.
Let at least one star die.
Level Guru Moon.
Level Loony Lander.
Level Pirate Planet.
Eat 100 burgers.
Level Speedy Sputnik.
Fill up hearts 100 times.
Play games a total of 50 times.
Level Spacey Galaxy.
Clean up a total of 10 times.
Level Doctor UFO.
Build a total of 1000 ships.
Experience sugar rush 10 times.
Take 300 selfies.
Build 10 ships and unlock Xanadu.
Survive all stages: smol egg, tiny baby, awkward teen, rocket surgeon.
Level Matchy Star.