Advanced Acid Hunter Arrows are a type of Ammunition in Horizon Forbidden West compatible with certain Hunter Bows. As an improved version of the Acid Hunter Arrow, it deals medium Acid damage and high Acid buildup on impact.
These can be used to inflict the Corroding state on enemies, which deals minor damage over time and weakens the protection provided by armor plating. Effective against enemies with exposed Acid canisters or acid vulnerability. Acid canisters shot with these arrows will explode, dealing acid damage and buildup to anything nearby.