Awareness - caraminden/anathema-roguelike GitHub Wiki

A character is considered Aware of an enemy if it knows the exact Location of that enemy via any one of its Senses. If a character has not Sensed well enough to know its exact Location, then it is considered Unaware of that enemy. Each Sense has its own criteria for how accurately it can determine the Location of enemies.

If a character is Attacked Physically by an enemy they are Unaware of, they will be able to determine the exact Location from where they were Attacked, becoming, at least temporarily, Aware of their attacker. But once they have been Attacked there is no guarantee they will be able to Sense the enemy, or that the enemy wont move to a new Location after the Attack.