Here is the full list of all 26 Spaceship Looter achievements.
Kill 100 enemies lamps
Shoot the enemies 100 electric bullets
Scientist from the future done his job!
Reptile Mutant done his job!
Robot Cleaner done his job!
Find all the items!
Federation Spy done his job!
Activate the 50 monoliths
Blast 100 barrels of acid
Run 100 platforms for cargo
Penetrate a spaceship pirates
Make 10 purchases
Commandos Joker done his job!
Save all the NPC
Buy the most expensive transfer
Kill the fifth boss
Unlock Scientist of the future
Kill the fourth boss
Unlock Robot Cleaner
Kill the third boss
Unlock Reptile Mutant
Kill the second boss
Finish first location without damage
Unlock the Federation Spy
Kill the first boss
Go training with Brain