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