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