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