(Passive) Hero counters all ranged attacks against him or any adjacent allies.
A Hunter with Archery will counter-attack all ranged attacks against them, provided they themselves are equipped with a ranged weapon. It will also trigger against attacks on adjacent allies.
Archery will not trigger if the Hunter takes mortal damage from an attack.
While Hunters usually avoid front-line combat, a Hunter with Archery and high defensive stats can be a powerful counter to an onslaught of ranged attackers.