Here is the full list of all 13 Data Thief achievements.
Complete the first level.
Complete all levels.
Complete a level with a gold score.
Complete all levels with a gold score.
Complete a level in under a minute.
Disable a tripped alarm.
Switch colors 100 times.
Break all the monitors on the main menu.
Complete a hard level without tripping an alarm.
Complete a hard level without switching colors.
Complete a hard level without switching colors or tripping an alarm.
Trip an alarm by switching colors into a data stream.
Stick your head through a wall on the main menu.