Here is the full list of all 45 Beyond: Two Souls achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Saw all endings.
Let every possible character die and chose to go with them to the Infraworld.
Finished the game in Duo mode.
Found all the bonuses.
Took every opportunity to be evil as Aiden.
Was victorious in every battle with the evil entities.
Entered the Infraworld.
Didn't speak during the interrogation.
Ran from the sandstorm and took less than 3 hits.
Looked after Tuesday's baby, healed Jimmy and channeled Stan.
Destroyed the gas station, the church, the gun store and the helicopter.
Ordered a pizza, watched some TV and wore something casual.
Got arrested three times and escaped each time.
Cooked a meal, cleaned the apartment, took a shower, wore the elegant dress and put on some music.
Finished the mission using only the Sheik.
Protected Jodie from her attackers.
Taught 3 or more of the teens a lesson, or started the house fire, with Aiden.
Choked Philip with Aiden.
Launched a scene in Duo mode.
Stayed in reality.
Deactivated the Black Sun.
One possible reality has been uncovered...
Saved every character that could be saved.
Helped Dawkins see the truth.
Told the truth during the interrogation.
Went to the containment shield with the General.
Successfully performed the entire ritual.
Earned enough money to have some chocolate during dinner.
Deactivated the supermarket's camera.
Escaped the train without being arrested.
Made it to the cathedral without being spotted.
Slept with Ryan.
Started at least one romance.
Shut down the monitor and finished the mission using only Aiden.
Completed all stealth training without being spotted.
Completed most of the physical training successfully.
Won every fight whilst taking less than 5 hits.
Successfully shut down the condenser portal.
Channeled all dead bodies in the condenser compound.
Did not impress or scare the teens with Aiden.
Forgave Jodie's father.
Vanquished the entities with Aiden.
Did 3 mischievous things with Jodie and Aiden.
Played as Aiden for the first time.
Stopped the experiment voluntarily.