Here is the full list of all 48 The Spatials achievements.
Completed 1000 bounties
Visited by 100000 visitors
Made 10000000 credits
Had 1000 officers go into stasis
100 officers resigned
Built 10000 floor tiles
Built 1000 objects
Defeated the big bad end boss and saved the galaxy
Found 10 collectible objects
Unlocked the entire tech tree
Blorg will now visit the station
Manufactured 1000000 products
Conquered 100 planets
Nogi will now visit the station
Visited by 10000 visitors
Killed 10000 enemies
Crusantians will now visit the station
Made 1000000 credits
Failed 100 contracts
Leveled one officer to level 30
Completed 100 bounties
Recycled 1000 items
Completed 1000 contracts
Manufactured 100000 products
Leveled one officer to level 20
Hired 100 officers
Lemurians will now visit the station
Visited by 1000 visitors
Made 100000 credits
Killed a boss of WTF quality for the first time
Manufactured 10000 products
Killed 1000 enemies
Leveled one officer to level 10
Completed 100 contracts
Manufactured 1000 products
Killed a boss of hard quality for the first time
Completed 10 bounties
Manufactured 100 products
Visited by 100 visitors
Unlocked your first tech node
Killed 100 enemies
Killed a boss of normal quality for the first time
Completed a mission for the first time
Landed on a planet for the first time
Completed 10 contracts
Completed your first contract
Hired an officer for the first time
Your first visitor has landed in the station