Here is the full list of all 29 Primordia achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Join your foe for the greater good
Stay true to yourself
Stop Scraper once and for all
Unlock Horatio's past
Victory at what cost?
Unlock the tower door, without outside help
Find Memento Moribuilt
Help a lost pilgrim find his way
Change Factotum's mind
Unlock the courthouse
Train Crispin for his big date
Get help from a new friend
Pass a legal test on the first try
Wake a slumbering giant
Use brawn instead of brains
Look at all the sensor coordinates
Use technology to do the impossible
Pass Ever-Faithful's test on the first try
That hit the spot. But for how much longer?
An easy solution to an impossible problem
Find the hidden tape deck
Clean two gears using different methods
Find every entry in the information kiosk
Reunite Surly Company
She pushed you too far
Resort to blackmail, and emerge the victor
Fulfill your true mission
Take a leap of faith
Finish the game with all possible robots.