During your game in Sunless Sea, you will sometimes find an interaction with a certain Challenge that you must pass before advancing further.
These challenges can either be unsuccessful or successful according to the Challenge requirement. There are several types of requirements:
- Stats requirement: these include
Hearts, 
Veils, 
Pages, 
Mirrors and Iron stats. The higher the stats, the higher the probability of being successful. - Luck requirement: Luck is a random chance of either getting unlucky or lucky. You cannot increase your odds of getting lucky.
- Item requirement: If you have the required item - being Trade goods or Curiosities - you will always be successful.
- Story or Circumstance requirement: The higher the status of a certain Stories or Circumstances, the higher the probability of being successful.
