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