Guard

Guards are the first enemy card you will come across. If a guard sees you when your stealth count is zero or lower, you will be caught, and be forced to restart the castle. Moving past a guard will use stealth points equal to the number in the upper right corner of the card.

Guards can only see in one direction. This direction is indicated by the cone on the border. The border opposite this is the guard's backside. If you approach a guard from their backside, you will not have to spend stealth points.

Guards will watch illuminated cards in the direction they are facing. Watched cards are indicated by an eye at the bottom center of the card. If your path takes you across a card that is watched, the guard will get a permanent +1. There is an animation to signal this - Any alerted guards will have an exclamation point appear above their heads.

Guards can be turned by moving to an illuminated card adjacent to the guard. Suspicious guards are indicated by a question mark appearing above their heads.