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.
Make a choice that will define the future.
Go above and beyond to change the future.
Defy death.
Solve all puzzles and monuments.
Help Byron get elected mayor.
Activate the tower on the High Plain.
Solve all regular puzzles.
Discover a vision of things to come.
Find every manifestation of the past.
Collect all 12 of Lifthrasir's audio logs.
Explore all of the lost labs.
Collect all 12 of Trevor's audio logs.
Activate the tower in the Anthropic Hills.
Use a functioning Somnodrome.
Activate the tower in the Western Delta.
Free Prometheus from his chains.
Activate the tower at the Circular Oasis.
Activate the tower at the Verdant Canyon.
Activate a Prometheus monument without stopping the spark-chasing music.
Activate the tower on the Southern Coast.
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.
Solve "Loop" without doing multiple circles.
Return to a puzzle for a second attempt.
Activate the tower in the Eastern Wetlands.
Solve one Pandora monument.
Discover a trace of what happened on the island.
Activate the tower at the Wooded Plateau.
Read 10 Social Media entries.
Solve one Sphinx monument.
Experience a datastream overload.
Get involved behind the scenes.
Find an ancient human artifact.
Activate the tower at the Grasslands Ring.
Find one Prometheus spark.
Solve one Prometheus monument.
Build one bridge.
Talk to each member of your team.
Explore content on a lost terminal.
Embark on the expedition.
Tell Schuyler what to do with his life... or not.
Explore the Museum of the Simulation in its entirety.
Visit New Jerusalem's Museum of the Simulation.
Provide your digital signature to someone.
Finish the calibration process.
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.
Maintain the status quo in New Jerusalem... for now.
Help Rand get elected mayor.
Have a heated argument with Thecla.
Tell Purple what to do about his voice.
Finish all three text adventures in the exhibition.
Refuse to go along on the expedition.
Find 10 ancient human artifacts.