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