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