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