How to Acquire
For this achievement, Daud must complete The Knife of Dunwall without alerting any enemies. Bend Time is very useful for sneaking past groups, and Blink allows him to access areas of the game that he could not reach otherwise.
Daud is permitted to kill enemies, which is a quick way of bypassing individual enemies, but is less effective in groups, as locating corpses makes enemies search for Daud. However, summoning a Whaler can be helpful, as the Whaler will distract the enemies long enough for Daud to sneak by, and does not count as a detection for Daud.