There are four types of Dunwall City Trials:

Mobility
Stealth
Action
Puzzle

These types of trials each have their own rules. For example, you can't be caught by guards in stealth challenges, as this will end the mission. Action trials, on the other hand, only end when you die.

At the end of each trial, you will receive a score of up to three stars. Each star unlocks a new piece of concept art in the game's art gallery.

Scoring 2 stars or higher on certain missions will unlock "Expert" versions of those levels, which are even more challenging.

This is a general overview of how the levels work. For specific strategies for each of the 10 trials, stay tuned and check out our next guides.