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