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