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