Here is the full list of all 26 The Final Earth 2 achievements.
Build the Machine
Build the Festival HQ
Build the Misdirector
Disable the Misdirector
Stack 100 buildings on the ground
Install or create a mod
Make a space ship travel for a full day
Have a Supercomputer and at least 42 labs
Follow a citizen while they're walking on a ball
Follow a fish
Follow a frog
Get a 100%+ stone mining boost from the Mining Research Center
Build a tree hugger base
Follow a centenarian while they're partying in a night club
Achieve :D happiness
Achieve xD happiness
Complete the "A New Beginning" scenario
Complete the "An Interworld City" scenario
Complete the "Hackers and Aliens" scenario
Complete the "City of the Key" scenario
Have a redwood grow at least 20 tiles high.
Become a librarian and build the Intergalactic Library
Build the Oldest Tree in the Universe
Build the Museum of Space Fossils
Build a second supercomputer in the same city.
Complete the "The Spaceport" scenario