Here is the full list of all 15 How We Got Here achievements.
Reach the second island
Reach the third island
Reach the fourth island
Reach the fifth island
Nobody hates them, seriously
Collect the gold coin from the balloon
You have freed Sam, but how far can he really fly?
Solve the second puzzle of the cave
Maybe this will lead to interesting discoveries...
Fully refill the giant jar
Relax on the bench for ten minutes straight
Try to destroy the slot machine
You sacrificed yourself to save your friends
Your ambition directs you to taking your chances on the islands
Join the Euphoric Universe Discord