Here is the full list of all 50 Planescape: Torment: Enhanced Edition achievements.
Issued Pronouncement of Two Deaths of One at Fortress of Regrets.
Kill all 3 incarnations in Fortress of Regrets.
Your name, at last.
Gave the Transcendent One an answer to a "meaningless question."
Defeated your adversary.
Absorb all 3 incarnations in the Fortress of Regrets.
Entered the Fortress of Regrets on your own.
Restored Dak'kon's faith.
Discovered why Dak'kon's faith is shattered.
Train to become a Mage.
Join Sensates.
Discovered your connection to Ignus.
Gained Ignus as a companion.
Gave birth to Adahn through belief.
Returned to Mebbeth and restored Unity of Rings.
Shifted Curst back to the Outlands.
Dealt with Trias the Betrayer.
Advanced Dak'kon's karach blade to highest neutral point.
Escaped the Lady's Maze - this time.
Drew the Lady's Gaze and got mazed.
Switch back to Fighter class over the course of the game.
Train to become a Thief.
Gained Vhailor as a companion.
Reach level 12 in Fighter class before any other class.
Advance an attribute score to 25.
Join Xaositects.
Dealt with Ravel Puzzlewell.
Met all of Ravel's branching incarnations in Sigil.
Join Anarchists.
Reach Chaotic Alignment (any).
Helped Nordom resolve his issues.
Defeated the Modron Wizard.
Gained Nordom as a companion.
Discovered the truth of why Morte is with you.
Join Dustmen.
Found Pharod's Vault. It smells in there.
Gained Fall-From-Grace as a companion.
Rescued Morte.
Gained Annah as a companion.
Recovered the Bronze Sphere.
Reach Good Alignment (any).
Gained Dak'kon as a companion.
Escaped the Mortuary.
Reach level 12 in Mage class before any other class.
Reach level 12 in Thief class before any other class.
Reach Lawful Alignment (any).
Reach Evil Alignment (any).
Maintained True Neutral Alignment until the end of the game.
Advanced Dak'kon's karach blade to highest evil point.
Advanced Dak'kon's karach blade to highest honor point.