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
Forced Mitchell to confront his past
Acquired the laser gun
Exposed Crash's identity to the world
Opened Ellie's eyes
Maximized a Major skill to level 6
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
Had a taste of all the 'professionals'
Bested a war machine
Got crushed by an elevator
Installed 7 implants
Found Soto
Upgraded a software to its maximum level
Neutralized the TruBody gang
Rescued Shen
Helped an old man off the street
Reached level 10
Opened the safe in the Aphrodite
Defeated an old acquaintance for the second time
Performed 20 Takedowns in a single playthrough
Drank more than 10 Energo Colas
Performed a headshot
Picked 10 locks
Reached level 5
Successfully used the Convince option in a dialog