The Acid Soaker is a small pistol of the same model as the Deliverer that has been jury-rigged to fire acid concentrate from a small glass container rather than 10mm rounds. It sprays an acidic solution at targets, causing poison damage and reducing the Damage Resistance of the target. It has an intake that dispenses liquid from a glass jar that is screwed into place. The solution visibly drains as the weapon is fired. The Acid Soaker cannot be modified at a weapons workbench. Its damage is only affected by the Bloody Mess perk.
Available at the Nuka-Cade from the prize terminal, for roughly 6000 to 7000 Nuka-Cade tickets. As the prize terminal stock rotates, the weapon is only randomly available for purchase but it can be purchased several times once the stock rotates again.