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