Here is the full list of all 52 Torment: Tides of Numenera achievements.
Rhin stayed with the Last Castoff.
The entire party dislikes the Last Castoff.
Convince the Cult in Sagus Cliffs that you're the Changing God.
Powered up Erritis' nanites.
Rhin found a new family through the House of Empty Time.
Tybir made a dangerous deal with Tol Maguur.
Helped Tybir make peace with Auvigne.
Became the main course in a Dendra O'hur feast.
Defeated Waits-for-Prey in combat.
Matkina turned away from her isolation.
Matkina became the new Memovira.
Freed Erritis from the Audience.
Callistege became fully human again.
Translated Callistege's consciousness into the datasphere.
Aligern found his friends and family.
Completed the game.
Reached maximum character level.
Activated the Resonance Chamber.
Rhin returned to her true home.
Reached the Ascension.
Returned the lascars to their home.
Found the murdens' treasure room
Purchased a slave.
Died by drinking too much Bloom juice.
Reached the Bloom.
Brought peace to Choi's spirit.
Freed the Valley from the Children of the Endless Gate.
The entire party loves the Last Castoff.
Found Miel Avest.
Undertook Tantalum's quest to explore the tombs of the Necropolis.
Helped Phoenix find the answer he seeks.
Brought a new minnim pair to life.
Rescued the Memorialists in the Valley of Dead Heroes by failing to find them.
Reached the Valley of Dead Heroes.
Equipped every one of Jernaugh's upgrades.
Completed a Mere.
Found the Hall of Relics.
Defeated the Adversary.
Slew the Nychthemeron.
Discovered Min of Tan Liang's embarrassing secret.
Acquired one too many cyphers.
Woke up in the Calm after dying.
Learn the truth of where Jherem came from.
Reached Sagus Cliffs.
Escaped the Sorrow... for now.
Ended your life before it truly began.
Became the new Memovira.
Coty betrayed the First on your behalf.
Became The Changing God.
Made Aligern believe that you're the Changing God... and earned his love anyway.
Found all Merecasters.
Unlocked all elements in the Calm.