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