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