Here is the full list of all 12 Duke Nukem: Manhattan Project achievements worth 200 gamerscore.
Finish the first level in under 3 minutes.
Finish ‘Orbital Oblivion’
Finish ‘Deviant Drilling’
Finish ‘Tanker Trouble’
Collect 120 Nuke symbols.
Finish ‘Fearsome Factory’
Finish ‘Unholy Underworld’
Finish ‘Metro Mayhem’
Stomp on 20 enemies.
Finish ‘Chinatown Chiller’
Finish ‘Rooftop Rebellion’
Kill 75 enemies.