Here is the full list of all 25 7th Sector achievements.
Phantom in a brick house
Water the lawn
Robots are people too
Phantom in base C 512
Run starter
Phantom
Wait for the train at the factory
Off the transformer after the conveyor
Well, try again
Wait for TV phantom
100 deaths
Another phantom in the apartment
TV phantom on the train
Destroy the first machine gun
Yes, wait for phantom again !
Kill the man in the factory
Final 1
Final 2
Final 3
Final 4
Download all images from HD
Activate all phantoms
Free a prisoner
Do not shoot!