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