The Corrosive is a key item on the Wrecked Ship, used to melt away rusted locks and open new pathways. You'll typically find it in the ship's lower decks or engine room, often requiring you to solve a small environmental puzzle or defeat a group of Molded. Conserve your Corrosive, as it's a limited resource, and only use it on essential doors to progress. There are usually multiple uses for each Corrosive bottle.
