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