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