An Armadyl full helm is a decorated rune full helm that is affiliated with the god Armadyl. It shares the same stats as the rune full helm, except it has a prayer bonus. Its appearance differs in that the helm features a greyish plume. The full helm requires 40 defence to wear and cannot be made using the smithing skill. Players can obtain a Armadyl full helm as a reward from completing a hard Treasure Trail.