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