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