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'
Completed the game
Met the new BiofarmTech receptionist
Met the original
Reached level 15
Installed 7 implants
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
Reunited ill-fated lovers
Upgraded a software to its maximum level
Forced Mitchell to confront his past
Exposed Crash's identity to the world
Acquired the laser gun
Opened Ellie's eyes
Helped an old man off the street
Drank more than 10 Energo Colas
Performed 20 Takedowns in a single playthrough
Neutralized the TruBody gang
Maximized a Major skill to level 6
Reached level 10
Performed a headshot
Picked 10 locks
Defeated an old acquaintance for the second time
Found Soto
Opened the safe in the Aphrodite
Rescued Shen
Successfully used the Convince option in a dialog
Got crushed by an elevator
Reached level 5