Here is the full list of all 19 Singled Out achievements.
Reach level 25.
Get a final score of 20,000.
Reach level 20.
Stop a criminal within 2 seconds on level 10 or above.
Stop 100 Galactic Supercriminals.
Explore the developer's other games.
Reach level 15.
Get a final score of 10,000.
Stop a criminal with less than half a second to spare.
Reach level 10.
Get a final score of 5,000.
Stop 10 Galactic Supercriminals.
Get a final score of 2,000.
Reach level 5.
Stop 1,000 Galactic Supercriminals.
Get a final score of 30,000.
Get a final score of 50,000.
Defeat the criminal overlord behind all this.
Complete Memory Mode.