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!
Robot Cleaner done his job!
Reptile Mutant done his job!
Federation Spy done his job!
Commandos Joker done his job!
Activate the 50 monoliths
Run 100 platforms for cargo
Kill the fifth boss
Make 10 purchases
Buy the most expensive transfer
Unlock Scientist of the future
Kill the fourth boss
Blast 100 barrels of acid
Unlock Robot Cleaner
Kill the third boss
Unlock Reptile Mutant
Kill the second boss
Unlock the Federation Spy
Kill the first boss
Find all the items!
Finish first location without damage
Penetrate a spaceship pirates
Save all the NPC
Go training with Brain