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
Reached level 15
Exposed Crash's identity to the world
Sold all the antiques to Hank
Didn't leave anyone behind
Showed THE Armagear hacker who's boss
Opened the safe on the Eclipse
Found Soto
Had a taste of all the 'professionals'
Drank more than 10 Energo Colas
Got crushed by an elevator
Upgraded a software to its maximum level
Acquired the laser gun
Opened Ellie's eyes
Installed 7 implants
Bested a war machine
Defeated an old acquaintance for the second time
Neutralized the TruBody gang
Maximized a Major skill to level 6
Reached level 10
Performed 20 Takedowns in a single playthrough
Helped an old man off the street
Rescued Shen
Opened the safe in the Aphrodite
Picked 10 locks
Performed a headshot
Successfully used the Convince option in a dialog
Reached level 5