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