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