Here is the full list of all 59 The Talos Principle 2 achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Activate the tower on the Southern Coast.
Finish all three text adventures in the exhibition.
Explore New Jerusalem in its entirety.
Activate the tower in the Lost Marshes.
Activate the tower in the Flooded Valley.
Activate the tower on the Desolate Island.
Read 30 texts on terminals.
Enter the Megastructure.
Activate the tower in the Eastern Wetlands.
Return to a puzzle for a second attempt.
Discover a trace of what happened on the island.
Activate the tower at the Wooded Plateau.
Solve one Sphinx monument.
Read 10 Social Media entries.
Experience a datastream overload.
Solve "Loop" without doing multiple circles.
Get involved behind the scenes.
Talk to each member of your team.
Activate the tower at the Grasslands Ring.
Solve one Pandora monument.
Solve one Prometheus monument.
Build one bridge.
Explore content on a lost terminal.
Find one Prometheus spark.
Find an ancient human artifact.
Embark on the expedition.
Explore the Museum of the Simulation in its entirety.
Visit New Jerusalem's Museum of the Simulation.
Tell Schuyler what to do with his life... or not.
Tell Purple what to do about his voice.
Provide your digital signature to someone.
Finish the calibration process.
Activate the tower at the Verdant Canyon.
Activate the tower at the Circular Oasis.
Activate the tower in the Western Delta.
Activate the tower in the Anthropic Hills.
Activate the tower on the High Plain.
Free Prometheus from his chains.
Make a choice that will define the future.
Go above and beyond to change the future.
Solve all regular puzzles.
Defy death.
Solve all puzzles and monuments.
Explore all of the lost labs.
Discover a vision of things to come.
Solve "Switcheroo" without using the "keep connections" option.
Solve "Seesaw" puzzle by picking up only one connector.
Work on solving a puzzle for more than 20 minutes.
Activate a Prometheus monument without stopping the spark-chasing music.
Collect all 12 of Trevor's audio logs.
Collect all 12 of Lifthrasir's audio logs.
Use a functioning Somnodrome.
Help Byron get elected mayor.
Maintain the status quo in New Jerusalem... for now.
Help Rand get elected mayor.
Have a heated argument with Thecla.
Refuse to go along on the expedition.
Find every manifestation of the past.
Find 10 ancient human artifacts.