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