Here is the full list of all 32 Dex achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Completed the game
Met the new BiofarmTech receptionist
Met the original
Had a taste of all the 'professionals'
Reunited ill-fated lovers
Forced Mitchell to confront his past
Exposed Crash's identity to the world
Reached level 15
Opened Ellie's eyes
Acquired the laser gun
Sold all the antiques to Hank
Upgraded a software to its maximum level
Found Soto
Maximized a Major skill to level 6
Didn't leave anyone behind
Showed THE Armagear hacker who's boss
Opened the safe on the Eclipse
Installed 7 implants
Bested a war machine
Neutralized the TruBody gang
Reached level 10
Got crushed by an elevator
Performed 20 Takedowns in a single playthrough
Picked 10 locks
Defeated an old acquaintance for the second time
Performed a headshot
Drank more than 10 Energo Colas
Opened the safe in the Aphrodite
Rescued Shen
Helped an old man off the street
Reached level 5
Successfully used the Convince option in a dialog