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